After liposuction, the risk of fat embolism can usually be overcome after 3 days, but the exact time should not be generalized, and patients are advised to consult a professional doctor. Liposuction is a technique that uses a negative pressure suction device through a small incision in the abdominal skin to suction the deep subcutaneous fat out of the body, thus thinning the fat layer. One of the risks of the procedure is fat embolism, which most often occurs within 72 hours after surgery and can develop suddenly, resulting in hypoxia, confusion and subcutaneous ecchymosis, which can be life-threatening. Generally speaking, the risk of fat embolism can be overcome within 3 days after surgery, but the exact time varies from patient to patient due to the amount of suctioned fat and individual’s physical condition, etc., and professional doctors should be consulted for relevant opinions. In addition to fat embolism, liposuction also has the risk of causing infection, skin necrosis, hematoma, bruising, hyperpigmentation, skin unevenness, skin scars, pulmonary embolism and other adverse reactions, patients should inform the doctor in time if any discomfort occurs after the operation, so that appropriate treatment can be carried out in time.