The organs on the lower left side of the stomach are the intestines, kidneys, spleen and ovaries. The organs on the lower left side of the stomach are mainly digestive organs, urinary organs, reproductive organs, etc. 1. Digestive organs: including descending colon, rectum, sigmoid colon and so on. 2. Urinary organs: including the ureter, left kidney, bladder and so on. 3. Reproductive organs: fallopian tubes and ovaries for women; spermatic cord and prostate gland for men. If there are symptoms of discomfort in the left lower abdomen, there are usually related organ diseases. For example, ureteral stones can have obvious pain in the left lower abdomen; it may also be other organ diseases, such as appendicitis, some patients also show discomfort in the left lower abdomen, which is related to the inaccurate positioning of internal organs. If there are symptoms of abdominal discomfort, it is recommended that the patient consult a doctor in a timely manner, who will combine the symptoms and auxiliary examinations to make a clear diagnosis and provide treatment.