The invention relates to a circuit breaker state monitoring device with multi-feature parameter fusion and a monitoring method thereof. The monitoring device includes a state information collecting module, a control system module, a state monitoring IO module, a state monitoring control module, a state monitoring human-computer interaction module, a GPRS processing unit, a WIFI module and a powermodule. The device is more reliable to judge the fault state of a circuit breaker compared with a single auxiliary contact, the timeliness of the transmission of a circuit breaker state and fault information is improved by using the GPRS processing unit, the information is transmitted by using wifi, and the simplicity of operation and maintenance is improved by a scheme of viewing the informationthrough a mobile phone browser.