A system of remote management of a construction equipment, comprising: a server communicatable with a communication terminal through a communication network; and a construction equipment where the communication terminal, an equipment control unit, and a plurality of electronic control devices are installed, wherein the communication terminal, the equipment control unit, and the electronic control devices are supplied electric power from a battery provided in the construction equipment, when the equipment control unit receives a key-off signal, the equipment control unit transfers a sleep mode switching command to the communication terminal and the electronic control devices of which operation states are switched to a sleep mode state, wherein the communication terminal wakes up from the sleep mode state at the time of receiving an operation request from the server and thereafter, wakes up the equipment control unit and transfers the requested operation of the server, and the equipment control unit performs the operation singly and thereafter, switches over to the sleep mode state when completing the operation, and when the operation is associated with at least one of the electronic control devices, the equipment control unit performs the operation by waking up the corresponding electronic control device and switches the waked up electronic control device to the sleep mode when completing the operation. wherein when the operation requested by the server is program updating of the equipment control unit or the electronic control devices, the communication terminal wakes up the equipment control unit and receives data required for updating from the server, the equipment control unit verifies whether the data transmitted from the server is program updating in the equipment control unit and thereafter, when the data is its own program updating request, updates the corresponding program and when the data is not the program updating request in the equipment control unit, verifies an electronic control device in which program will be updated and thereafter, gives a wake-up command to the verified electronic control device and when the electronic control device wakes up, transfers the program updating request signal, and the verified electronic control device wakes up by the equipment control unit and thereafter, performs the program updating. a server communicatable with a communication terminal through a communication network; and a construction equipment where the communication terminal, an equipment control unit, and a plurality of electronic control devices are installed, wherein the communication terminal, the equipment control unit, and the electronic control devices are supplied electric power from a battery provided in the construction equipment, when the equipment control unit receives a key-off signal, the equipment control unit transfers a sleep mode switching command to the communication terminal and the electronic control devices of which operation states are switched to a sleep mode state, wherein the communication terminal wakes up from the sleep mode state at the time of receiving an operation request from the server and thereafter, wakes up the equipment control unit and transfers the requested operation of the server, and the equipment control unit performs the operation singly and thereafter, switches over to the sleep mode state when completing the operation, and when the operation is associated with at least one of the electronic control devices, the equipment control unit performs the operation by waking up the corresponding electronic control device and switches the waked up electronic control device to the sleep mode when completing the operation. wherein when the operation requested by the server is program updating of the equipment control unit or the electronic control devices, the communication terminal wakes up the equipment control unit and receives data required for updating from the server, the equipment control unit verifies whether the data transmitted from the server is program updating in the equipment control unit and thereafter, when the data is its own program updating request, updates the corresponding program and when the data is not the program updating request in the equipment control unit, verifies an electronic control device in which program will be updated and thereafter, gives a wake-up command to the verified electronic control device and when the electronic control device wakes up, transfers the program updating request signal, and the verified electronic control device wakes up by the equipment control unit and thereafter, performs the program updating.