Pressing pain in the lower left side of the navel may be caused by indigestion, intestinal diseases, urinary system diseases, female gynecological diseases and other reasons. 1. Indigestion: Frequent overeating and eating hard-to-digest food triggers indigestion, which can lead to pressing pain in the left lower abdomen, bloating, nausea and other symptoms. 2. Non-specific inflammatory bowel disease: including ulcerative colitis, Crohn’s disease, etc., which can present with pressing pain in the left lower part of the navel, accompanied by diarrhea, mucus, pus and blood stools and other symptoms. 3. Ureteral stones on the left side: friction stimulation of the ureteral tract caused by stone activity, causing pain on the left side of the navel. 4. Female gynecological diseases: for example, left salpingitis, ovarian cysts, etc., can cause pressure pain below the left side of the navel, abnormal secretions, fever and other symptoms. The left side of the navel pressing pain, there may be other reasons, it is recommended to timely hospital specialist interview, identify the cause of the disease, and then follow the doctor’s instructions standardized treatment.