At present, the most commonly used method of lip augmentation is injection lip augmentation, which is simple and quick, convenient to shape, with little damage, no swelling and quick recovery, and will not affect the sensitivity of lips and kissing. Commonly used materials with high reliability and safety include lip augmentation by injecting autologous fat particles, lip augmentation by injecting hyaluronic acid and collagen. Each has its own characteristics and can be used according to its own actual situation. Although injection is simple, but the injection technology is not skilled, it is also easy to cause injection to accumulate or form hematoma, resulting in uneven or nodular masses. Therefore, it is best to consult a formal plastic surgery institution.