In order to find out the strain change law of the composite component under different surface conditions of the tools and their influence on the curing deformation, thermocouple and FBG sensors were used to monitor the temperature and strain of composite components, and the change law of component strain under different tool surface conditions could be obtained.The results show that the use of demoulding cloth can effectively weaken the interface interaction between tool and component, so that the strain of component is very small in the heating stage.And the strain of component with the tool surface condition of three-layer demoulding agent is obviously less than that of one-layer demoulding agent.In the cooling stage,large compressive strain of composites is detected in all three surface conditions.The tool-part interaction force is the largest when there is one layer of releases agent,and the main warping deformation are along the fiber direction after the curing process.