In this paper, we propose the wearable sleep control system and estimation method of the sleep state using pulse wave. We are trying to make an adaptive human interface of sleep control system above mentioned. There are 3 steps for realize the system. At first, the system could be estimate human sleep state. Secondly, system must be an adaptive system for differences among individuals. At last, the system must be able to do something to human to control user's state. We are considering about most simple way to control human's sleep cycle phase is to control awakening timing and sleep time. Now, the ordinary alarm clock operates according to the time. And we have to set the "time" in advance. But human has a rhythms in one's sleep cycle. The cycle affects one's sleep depth and wake-up timing.
