High-quality hitting should conform to the principle of "fast, hard, accurate and lively", which is determined by the following factors: First, the hitting power determines the hitting speed, and the greater the hitting power, the faster the ball is. Only the strength of hitting the ball can make the opponent in a passive position without sufficient preparation time. Second, the speed of returning the ball, although we require fast judgment, fast movement, fast hitting, etc. , the specific focus is on fast return. We should not only improve the "absolute speed" of returning the ball, but also improve the "relative speed" of returning the ball, so as to give the opponent a powerful attack and make it hard to prevent and be passive. Third, the arc curvature of the ball and the hitting distance are all related to the speed of the ball. If we want to speed up and strengthen accuracy and diversity, we must solve the problem of arcing. Fourth, the ball should be not only accurate, but also aggressive. The hitting point directly affects three aspects of the ball: firmness, accuracy and vividness. In another sense, hitting the ball in place can be described as "hard", "accurate" and "lively", so we must strengthen the training of landing control ability, master the methods of landing control, and strive to control the landing point every time. 5. Consistency of hitting action, but there are many similarities in some technical action methods. What we do to make these movements as similar as possible when hitting the ball is called the consistency of hitting the ball. The consistency of action not only increases the difficulty of the opponent's accurate judgment, but also creates an illusion for the opponent, forming a wrong judgment and increasing the difficulty of returning the ball. In this way, it is difficult for an opponent to judge what kind of ball he played before hitting the ball, and he can only judge it after hitting the ball. Therefore, whether it is frontcourt technology, midfield technology or backcourt technology, we must strive to pursue the consistency of similar actions.