The causes of foot swelling are complex and different causes are treated in different ways. For foot swelling caused by trauma, the lower limbs can be elevated to promote venous reflux and reduce local edema, while topical treatment with Sihuangshui honey ointment and Qizheng anti-inflammatory and pain relief patch can significantly eliminate foot edema, which can be treated by local infrared irradiation and oral treatment with Mai Zhi Ling tablets. The swollen feet caused by renal insufficiency can be treated with oral diuretics, and due to hypoproteinemia, it is necessary to actively give supplemental albumin, and if the renal failure should be actively given dialysis treatment. The swollen feet due to liver failure should be actively treated with albumin supplementation, along with diuretic and liver protection treatment, and the edema of the feet will be significantly improved.