If a woman has swollen left foot, there are several clinical causes that can lead to it: First, if a woman has lower extremity vein thrombosis on the left side of the lower extremity, it will cause swollen foot on the left side. This is because after the formation of lower extremity vein thrombosis, it will cause obstruction of venous blood return, and then venous blood will continuously pool in the tissue interstices, forming swollen foot on the left side. Secondly, if a female patient has a gout attack, she will also have swollen feet on the left side, and then she should have a consultation with an endocrinology outpatient doctor to clarify the relevant diagnosis. Thirdly, if a woman suffers from trauma to the left side of the foot, it will also cause swelling of the left side of the foot, so she should go to the emergency department of the hospital as soon as possible to clarify whether the swelling of the left side of the foot is caused by trauma.