Lower abdominal pain and bloating always wanting to have a bowel movement and white stool discharge may be associated with colitis. Lower abdominal pain and bloating always want to stool, stool white discharge is generally considered to be colitis. The main clinical manifestations of colitis diarrhea, abdominal pain, mucus and pus and blood stool, always want to have no stool and stool discharge or discharge still do not feel clean, and even constipation, sometimes diarrhea and sometimes constipation, the left side of the lower abdomen or abdominal pain or cramps. There may also be lethargy, fatigue, loss of appetite, abdominal distension, nausea, vomiting and liver enlargement, fever, anemia and other symptoms. Abdominal pain can be relieved after bowel movement, and mild cases may have no abdominal pain or only abdominal discomfort. If toxic megacolon is complicated or the inflammation spreads to the peritoneum, there may be persistent severe abdominal pain. After the diagnosis of colitis should be timely and standardized treatment, so as not to cause adverse consequences.