The invention discloses an elevator monitoring system based on wireless network, comprising a lift car data collector, a control data collector, a CAN interface and a monitoring terminal, wherein a sensor group is connected with a second microprocessor in series to form the lift car data collector; the second microprocessor is electrically connected with the CAN interface; the control data collector comprises an ID card recognizer, a GSM module, a first microprocessor, a login calling panel and an elevator control system, wherein the ID card recognizer, the GSM module and an output end of thelogin calling panel are connected with an input end of the first microprocessor respectively; the first microprocessor is electrically connected with the CAN interface and the elevator control systemrespectively; and the GSM module is wirelessly connected with the monitoring terminal. The elevator monitoring system based on wireless network has the advantages of simple configuration, low cost andquick response speed on elevator fault, and the data transmission of the system is convenient, intact, reliable and safe, with wide application scope.