The utility model discloses a real time control device based on body surface flesh comprises flesh electricity electrode, flesh electricity signal preprocessing circuit, optical coupling isolation circuit, digital process system, data receiving terminal and control terminal, the all surface emg signals of forearm department that gathers after in real time of this department to convey flesh electricity data to the PC in real time, and carry out a series of algorithms to the flesh signal of telecommunication and handle on PC, with the result of differentiating that obtains various gestures, and carry data receiving terminal through mode wireless or USB with the result of difference. The utility model discloses a direct current technique is got rid of to developments, realizes enlargeing the suppression that reaches the noise to the processing of the flesh signal of telecommunication, has not only improved the SNR of signal, simplifies circuit structure moreover, reduces system power dissipation, be greater than 92% to the accurate discrimination of different gestures, add the optical coupling isolation circuit, reduced the interference of the noise that the signal receives, guarantee user's security simultaneously.