The problem to be solved by the present invention is to provide a road condition diagnosis system capable of updating the road surface condition in real time using a low-cost/miniaturized road surface measuring device in order to solve the problems of the conventional road surface condition measuring device as described above. will be. According to an embodiment of the present invention, a road surface condition measuring device provided on one side of a transportation means, comprising: an acceleration sensor coupled to a front end of the suspension of the transportation means; GPS detecting the current position of the vehicle; It includes a control unit for receiving the acceleration values in the x-axis, y-axis and z-axis direction from the acceleration sensor, and receives the current position of the vehicle from the GPS and stores it in a memory; Provided is a road surface condition measuring device that provides an analysis by converting an acceleration value for a location value stored in the memory into a frequency domain.
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