The issue of consciousness is a core issue in flow theory.The key element of flow is concentration,which is based on self-control and the order of consciousness.Flow usually gives people a feeling of ecstasy,but this disappearance of self-awareness does not mean the disappearance of the self.Self still controls actions and thinking.The abnormality of the sense of time in flow is related to the disappearance of self-consciousness.Reflection provides the dynamic situation of behavior and helps people adjust themselves in time to achieve the optimal experience of heart flow.