To provide a device capable of accurately grasping the adequacy of the scattering state of an antifreezing agent (i.e., whether the antifreezing agent is actually scattered at the frozen position or not) and its operating record control method.

This road surface antifreezing device 10 is provided with a freeze sensor 16 generating sensor data 16a when it detects the frozen state of a road surface 23, a work switch 14 generating switch data 14a via the action of a worker, and an antifreezing agent scattering means 18 generating the scattering signal 20a when an antifreezing agent 20 is scattered on the road surface 23 in response to at least one of the sensor data 16a and switch data 14a. An operation recording means 12 generating the time data and the record data based on the antifreezing work state when receiving at least one of the sensor data 16a, switch data 14a, and scattering signal 20a and holding the record data is provided.