The side effects of liposuction include subcutaneous bruising and hematoma, uneven skin, and infection, which usually do not appear after 2 years. Liposuction utilizes the principle of negative pressure to make small incisions in the skin, and the instrument is inserted into the fat layer to extract the fat fragments, which can achieve the effect of fat extraction and improve the body shape. In the process of liposuction will inevitably damage the blood vessels under the skin, if the damage to blood vessels is small, it may cause extensive subcutaneous bruising, if the damage to blood vessels is large, it may produce hematoma. In the process of liposuction, if not properly sterilized or improperly cared for in the later stages, infection may occur and local redness, swelling and pain may occur. If too much fat is extracted at one time, localized numbness, uneven skin, skin laxity may occur after liposuction, and scarring may remain, affecting aesthetics. There is usually no side effect after 2 years of liposuction. If you need liposuction surgery, it is recommended that you go to a regular hospital to avoid any abnormalities.