The negative aspects of current society claims comfortable sleep. To bringback natural sleep, intelligent alarm clock is proposed with utilize aquision and analysis system of pulse beat based LifeLog. And we propose that to be utilized the music used to to wake up or relax as comfortable life and sleep. It is being developed and experimented. Specifically we developed wearable portable device for logging pulse beat, alarm clock type sound device and PC software to be used for analysis, and we experimented a part of it.