A thyroid nodule is a mass or masses of abnormal tissue structure in the thyroid gland due to various causes. For example, thyroid nodules detected by palpation are masses found in the thyroid region; thyroid nodules detected by ultrasonography are areas of focal echogenic abnormalities. The results of the two tests are sometimes inconsistent, such as when a thyroid mass is detected on physical examination but no nodule is found on thyroid ultrasonography, or when a thyroid nodule is not palpated on physical examination but is found on thyroid ultrasonography. Thyroid nodules are very common. The prevalence of thyroid nodules found on palpation is 3%-7% in the general population, while the prevalence of thyroid nodules found on high definition ultrasound is 30%-60%. Most thyroid nodules are benign, and malignant nodules account for only about 5-10% of thyroid nodules. The key to the diagnosis and treatment of thyroid nodules is to identify benign and malignant nodules. If nodules are found to have sand-like calcification, nodules with abundant blood flow, nodules with unclear demarcation, halo and rapid growth, malignancy should be noted. If the cancer is smaller than 1.0 cm, the prognosis is good. If it is larger than 2.0 cm and invades the surrounding tissues, the prognosis is bad. We have cured a large number of thyroid diseases by using small incisions, fine dissection and other methods of surgery. There are few postoperative complications, no skin stitches and no stitches removal after surgery, and you can be discharged on the first or second day after surgery. In case of thyroid cancer, post-operative treatment with a combination of Chinese and Western medicine is given to greatly improve productivity and reduce recurrence and metastasis, etc. Gastric cancer and colorectal cancer are the most common gastrointestinal malignancies in China at present. Gastric cancer is insidious and has no special symptoms in the early stage, so it is often confused with chronic gastritis, gastric ulcer and chronic cholecystitis, which is easy to be misdiagnosed and missed, and similarly, colorectal cancer has no special symptoms in the early stage, and blood in stool is easy to be misdiagnosed as hemorrhoids and anemia. We use painless gastroscopy and colonoscopy for patients with abdominal discomfort and blood in stool to achieve early diagnosis and early treatment. Modern treatment of gastric and colorectal cancer is a comprehensive treatment based on surgical resection. For abdominal wall hernia, we have been using laparoscopic and open surgical methods for individualized selective treatment since 2000, performing patch tension-free repair with small surgical incisions, no sutures in the incision, no obvious scars, no pain after surgery, and normal walking on the first day after surgery, and can be discharged three days after surgery.