Small abdominal pain want to go to the toilet and can not pull out the usual symptoms of acute and severe, according to the cause of the drug, surgery and other treatments, common causes include bacillary dysentery, ulcerative colitis, rectal cancer and so on. 1. Bacterial dysentery: treatment includes ① general treatment: such as physical or drug cooling, correction of shock, etc.; ② drug therapy: commonly used antibiotics (such as ciprofloxacin, ceftriaxone), antispasmodic and analgesic drugs (such as atropine, scopolamine) and so on. ③ other treatments: such as immunotherapy, microecological agent treatment, mainly used for chronic bacillary dysentery. 2. Ulcerative colitis: treatment includes ① general treatment: such as massive diarrhea to correct water and electrolyte balance disorders, severe anemia, blood transfusion therapy, etc.; ② drug therapy: commonly used aminosalicylic acid preparations (such as salicylazosulfapyridine), glucocorticosteroids (such as prednisone), etc.. (iii) Surgery: applicable to those who are not effective in internal medicine treatment and in serious condition. 3. Rectal cancer: treatments include ① surgical treatment: divided into local excision, radical resection, palliative surgery, etc.; ② radiotherapy: can be used in preoperative, postoperative or palliative treatment; ③ drug treatment: bevacizumab and cetuximab have been approved for the treatment of advanced rectal cancer. All of the above drugs should be used under the guidance of doctors, and the treatment programs for symptoms caused by different primary diseases can be quite different, and only some of the causes are listed above. Therefore, those who have symptoms of acute and severe symptoms must consult doctor in time to find out the causes, and then carry out standardized treatment under doctor’s guidance, and must not make blind judgment and dispose of the symptoms on their own, so as to avoid adverse consequences.