The invention provides a substation condition monitoring system based on terminal control, comprising an operation and maintenance master station system, an acquisition system, a control system, a mobile terminal and an intelligent management platform system, wherein, the acquisition system is connected with the operation and maintenance master station system, and the acquisition system is used for collecting environmental data and electrical operation data in the substation in real time; The operation and maintenance master station system is used for judging whether the received environmentaldata and the electric operation data satisfy the preset condition in real time, and outputting the control instruction and the alarm information when the preset condition is satisfied; The control system is connected with the operation and maintenance master station system. The control system is used for controlling the actions of the collector and the electrical equipment in the substation in real time according to the received control instruction. The mobile terminal is respectively connected with the acquisition system and the control system. The mobile terminal is used for receiving the environmental data and the electric operation data and outputting the movement control instruction.