High strength concrete has low water binder ratio and poor permeability, so it is difficult for external curing water to enter the interior zone of concrete, leading to the worse effect of traditional external curing, and faces the risk of cracking caused by autogenous shrinkage. An effective method to solve the problem is to add super absorbent material to concrete mix proportion to realize internal curing. The physical and mechanical characteristics and dosage of concrete of internal curing material were reviewed. And the theoretical basis of concrete internal curing was explained. Furthermore, the mechanism of autogenous shrinkage and the mechanism of internal curing shrinkage reduction were discussed. In general, internal curing can reduce autogenous shrinkage, but the effect on drying shrinkage was related to the extra water. It has a negative effect on the strength and elastic modulus of concrete. Finally, the existing problems and possible future research directions for the current internal curing technology of concrete were discussed.