Hyaluronic acid injection is a kind of micro-plastic surgery that many beauty lovers in Han nationality like. But the specific injection method depends on different parts. Different parts have different injection methods. Straight line method. The receding method is usually used to enhance lip color or nasolabial groove. Continuous puncture method. When dealing with superficial wrinkles and nasolabial groove, multi-point injection along wrinkles, folds or lips is usually used. Fishbone injection. Along the fold, a line shape is formed at each puncture point by continuous puncture injection. This technique is particularly effective for dynamic lines, such as laugh lines, shallow nose and lip lines, puppet lines, etc., but it is not suitable for deep injection.