Based on analyzing the mining equipment life evaluation theoretical system,the equipment life evaluation target system of the mining machinery is put forward taking the economic life,security life,reliability life and technical life as the targets.Then,the structure and model of the mining equipment life evaluation system are established and prepared for the realization of the system theoretically.Taking hydraulic support as the research object,the life evaluation system of hydraulic support is established and practice shows that the life evaluation system is feasible. Based on analyzing the mining equipment life evaluation theoretical system, the equipment life evaluation target system of the mining machinery is put forward taking the economic life, security life, reliability life and technical life as the targets. Chen, the structure and model of the mining equipment life evaluation system are established and prepared for the realization of the system theoretically .aking hydraulic support as the research object, the life evaluation system of hydraulic support is established and practice that that the life evaluation system is feasible.