The invention discloses a portable toxic gas wireless monitoring device comprising a central monitoring unit, a plurality of detectors, a power module, a toxic gas sensor, a signal adjusting circuit, a temperature and humidity sensor, an acceleration sensor, a wireless communication module, an alarm module, a display module, a keyboard module, a microprocessor and peripheral circuit thereof, wherein, the central monitoring unit is used for monitoring and managing; and the detectors are portable equipment. The portable toxic gas wireless monitoring device preferably further comprises a clock data module and a GPS module, can provide the comprehensive monitoring to the operator action, not only can provide detecting and alarming functions to operators, also can lead supervisors in a controlroom to learn the state of the operators at any time; the supervisors can reasonably make judgment, thus greatly improving the ability of mastering the on-site condition as well as the accuracy and the effectiveness of response.