The method of method of measuring the cumulative amount of impact, the wearable monitoring device and the cumulative amount of impact and server is provided. Wearable device that measures the cumulative amount of impact by a tool (hereinafter referred to as' vibration tool ") that is worn on the hand of the operator generates vibrations according to an embodiment of the present invention, the hand of the operator during operation of the vibrating tool vibration detecting the vibration number and size is passed to the sensor, for a predetermined time, a memory for storing in the sense of stacked the vibration number and size, wherein for a predetermined time, the cumulative number of vibrations stored in the memory and the size, the vibrating tool And an output unit for outputting information corresponding to the information on the received risk level, wherein the communication unit transmits the identifier of the wearable device to the monitoring server and receives information on the risk level according to the cumulative impact amount from the monitoring server, the cumulative amount of impact is the operator, including the vibrating tool, comprising: Characterized in that the vibration number and size of the one or more vibration tool used for a period of time accumulated.;
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