1. Clinical data 1.1. General data The cases were 65 patients with postoperative gastroparesis syndrome treated in our department from January 2008 to March 2012. Among them, 42 were male and 23 were female; the age distribution ranged from 18 to 87 years old, with an average of (65.77±16.13) years old; there were 40 cases of gastric cancer, 6 cases of colon cancer, 7 cases of duodenal cancer, 6 cases of pancreatic cancer, 2 cases of bile duct cancer, 2 cases of esophageal cancer, 1 case of pancreatic duodenal lymphoma, and 1 case of hypopharyngeal cancer. All the patients were confirmed to have gastric emptying dysfunction by gastroscopy or abdominoplasty, excluding mechanical obstruction, mainly manifesting as gastric distention, pain, warmth and pressure, nausea and vomiting. All patients had received conventional treatments for postoperative gastroparesis, such as water fasting, continuous gastrointestinal decompression, nutritional support, maintenance of electrolyte and acid-base balance, gastric motility, antiemetic, etc. Six patients had received oral Chinese medicine treatment, all of which were ineffective. The disease duration was 7~90, d. 1.2, Diagnostic criteria Self-defined ① history of thoracic and abdominal tumor surgery; ② gastric drainage over 800, mL/d; ③ symptoms of abdominal distension, abdominal pain, nausea and vomiting; ④ no mechanical obstruction after one or more tests; ⑤ no obvious water-electrolyte or acid-base imbalance; ⑥ no underlying diseases causing gastroparesis, such as diabetes mellitus, scleroderma, hypothyroidism, etc.; ⑦ no (vii) No drugs affecting smooth muscle contraction were applied. 2. Treatment 2.1. Conventional treatment Fasting, continuous gastrointestinal decompression, enteral or parenteral nutrition support, maintenance of electrolyte and acid-base balance, promotion of gastric motility, antiemetic treatment, etc. 2.2, Chinese medicine external treatment 2.2.1, Chinese medicine external application Formulation of external application formula for gastroparesis: mucuna pruriens, heliotrope shell, thick park, clove, dry ginger, cinnamon, and pierced sorrel, etc. If the pain is obvious, add Yanhuosuo. Take 2 tbsp of the above medicine into powder and make a paste with appropriate amount of yellow wine, vinegar, honey and ginger juice, and apply it externally on the epigastric, middle epigastric and Shen Que points, and fix it with 10cm×10cm size medical film. Remove after 2~3 hours, 1~2 times/d. 2.2.2, moxibustion Before applying the external compress, ignite the moxa stick and apply moxibustion to the epigastric, middle epigastric and Shen Que points for 5, min, and then apply the external medicine to the above points after the local skin is warm, and then apply moxibustion on the medical film of the external Chinese medicine for 15, min. 3, results 3.1, efficacy determination criteria Self-drafted as follows. Cured: After treatment, the main symptoms disappeared, the flow of gastric tube drainage ≤ 100, mL/24, h. If the gastric tube is clamped and no discomfort is observed for 24, h, the gastric tube is removed, and no obvious discomfort is caused when eating is resumed. Improvement: the main symptoms improved after treatment, the flow of gastric tube drainage > 100, mL/24, h, and abdominal distension was felt again after gastric tube clamping. Ineffective: The main symptoms did not improve after treatment. The flow of gastric tube did not decrease significantly, and gastrointestinal decompression was still needed. 3.2, the treatment results were observed for 30, d. Among 65 patients, 59 cases were cured, accounting for 90.77%; 4 cases were improved, accounting for 6.15%; 2 cases were invalid, accounting for 3.08%. The total effective rate was 96.92%. The average recovery time of gastrointestinal function was (13.21±6.27) d. None of the patients showed skin allergy. 4. Discussion The external treatment method of Chinese medicine adopts the methods of external application of drugs, enema, acupuncture and moxibustion to make the drugs absorbed through local skin, acupuncture points and mucous membrane to achieve the effect of external treatment of internal diseases. The “Rei Bo Ping Wen” elaborates that the mechanism of external treatment is the same as that of internal medicine: “The theory of external treatment is the theory of internal treatment, and the medicine of external treatment is the medicine of internal treatment, but the only difference is the method. The external treatment method of Chinese medicine for gastroparesis avoids the drawback of increasing the burden on the stomach and intestines due to oral medication, which leads to the aggravation of the disease. At the same time, this method has direct action, quick effect, easy operation, low cost, and significantly shortens the recovery time of gastrointestinal function. Gastroparesis syndrome after tumor surgery can be classified as “fullness”, “vomiting”, “gastric distension” and “dullness” in Chinese medicine. It is believed that it occurs due to the fact that the tumor is full, vomiting, stomach distension, and numbness. According to Chinese medicine, it occurs due to surgery damage to the spleen and stomach, failure of the spleen and stomach to transport and transform, internal obstruction of phlegm and dampness, stagnation of qi and blood stasis, and malfunction of the qi flow in the middle jiao, resulting in blockage of the flow. Clinically, the treatment of postoperative gastroparesis syndrome after tumor surgery is mostly the same as the treatment of postoperative gastroparesis after general surgery, which is mainly based on the removal of heat and internal organs, but the efficacy is not satisfactory. The reason is that general surgery patients are mostly young and strong, with internal dampness and heat in their bodies, and the residual heat after surgery is not yet exhausted, so the treatment effect is significant with the main treatment of heat and internal organs; while tumor patients are mostly middle-aged and old, with age, the function of internal organs decreases, and Yang Qi is gradually deficient, coupled with the surgical damage, the deficiency of Yang in the spleen and stomach, and the internal cold is mainly, at this time, the use of cold medicine to clear heat and internal organs is contraindicated, and the treatment rule should be to warm Yang and move Qi. Therefore, we use pungent and warm herbal medicine with moxibustion to achieve the effect of warming the yang and promoting the internal organs. The topical drugs used are pungent, warming and moving qi, strengthening the spleen and stomach, moving qi and eliminating gangrene, activating blood circulation and eliminating blood stasis, while moxibustion, which has the function of warming the middle and benefiting qi, moving qi and activating blood circulation, can warm yang and move qi with the help of moxibustion fire, and make the skin pores of the moxibustion area open and promote the absorption and distribution of the topical drugs, which can jointly achieve the effect of warming and moving qi, eliminating blood stasis and strengthening the spleen, so that the symptoms and signs of gastroparesis can be relieved or released. Any tumor radiotherapy spleen and stomach dysfunction, inability to eat, nausea, vomiting, gastric distension, stomach cold, etc. can be used external Chinese medicine treatment methods, can achieve very good results.