The invention relates to the technical field of an alarm circuit, and particularly to an electric shock preventing alarm circuit. The electric shock preventing alarm circuit comprises a signal acquisition circuit, a same-phase proportional operating circuit, a false triggering preventing time delay circuit, a reverse scaling operational circuit and an alarm output circuit. The invention further discloses a wrist type near electric alarm device which comprises a wrist band that is used for being worn on the wrist and the electric shock preventing alarm circuit that is arranged in the wrist band. The electric shock preventing alarm circuit has advantages of reasonable design, high interference resistance and high working reliability. The wrist type electric alarm device is worn at a wrist portion of an electrical operator and can perform alarming immediately when a hand is next to electrified equipment, thereby reminding the electrical operator to leave in time, and reliably ensuring body safety.