Abstract: Abstrcat:Complex training has gained some degree of popularity among researchers and strength and conditioning coaches because it provides an efficient way to develop strength and power.Studies have confirmed that effects of complex training are outstanding compared to resistance training orplyometrics alone, as well as for developingor keeping strength and power.It alsohas characteristics of high efficiency and reducing injury.Complex training can produce a series of training forms when training variable changes.This paper reviews the development of complex training and related concept, basic structure and variable of complex training.This paper also pointsout existing problems and make prospect on future research.