E. coli infection is manifested as abdominal pain, diarrhea, nausea, vomiting and other symptoms, depending on the location of the infection, the performance may vary. Usually the gastrointestinal tract infection does not exclude the urinary system infection, especially easy to upstream infection caused by cystitis, pyelonephritis and other urinary system infections, the main symptoms are frequent urination, urinary urgency, painful urination, difficult urination and other discomfort. E. coli is a conditionally pathogenic bacteria in the body, the normal human body will also contain a large number of E. coli especially in the intestinal tract, when the dysbiosis can cause gastrointestinal diseases, it is recommended that timely anti-infection treatment and pay attention to a light diet, appropriate to drink more water, and maintain a good sleep regular rest.