Rugby is a high-intensity contact sport, in which players have to perform short sprints and quickly change direction during match play, so speed, agility and power are very important attributes for rugby players. Several studies have found that speed and change of direction ability are related to the tackling skills of players. Power training-including weightlifting, plyometrics, ballistics, and complex training-can help significantly strengthen lower limb muscles. The strength and power of players' lower limbs can be measured through maximal strength tests, vertical jump tests, and isometric mid-thigh pull tests. This paper reviewed the physiological mechanisms, trained methods, and measurement methods for lower-limb muscle power, and it was intended as a reference for both rugby coaches and players.