In epilepsy fit, lost of consciousness of patients is very dangerous according to happening places and situations and it is necessary to detect and inform to related person. But the existing systems are expensive, difficult to install. It also does not always detect it. In this research, in order to reduce an unexpected accident, it is proposed that the dangerous state detection system can detect the epilepsy fit at any time in daily life. It uses acceleration sensor system for fit detection. It is cheap and portable so, it can be installed easily to human body.