There are more factors for women with left-sided abdominal distension, which may be caused by the following factors: 1. If a woman has left-sided abdominal distension during ovulation, it may be caused by ovulation pain, because the pain is caused by ovulation fluid stimulating the abdominal wall after ovulation. If a woman occurs in the non-ovulatory period with left-sided abdominal distension and pain, caused by gynecological inflammation, clinically more common is left-sided adnexitis, may be caused by left-sided ovarian cyst torsion, need to seek medical attention in a timely manner; 3, may be caused by cold in the small abdomen of women, it is recommended that patients go to the hospital for ultrasound and gynecological examination, according to the results of the diagnosis and treatment.