Downward detection type vehicle detection device

The invention discloses a downward-detection-type vehicle detection device, and relates to the technical field of auxiliary driving. In order to solve the problems that in the prior art, when the height of a vehicle body is lower than that of a front vehicle, even if a 360-degree all-round camera, radar and other detection devices are arranged, more peripheral information cannot be obtained, and especially traffic behaviors such as vehicle emergency deceleration and parking in a longitudinal front high-position visual blind area cannot be obtained. In order to solve the technical problem that pedestrians and vehicles suddenly penetrate through the blind area of the front side of a vehicle or the blind area of the front side of the vehicle, the technical scheme provided by the invention is as follows: the downward detection type vehicle detection device comprises a shell provided with an opening; the probe is arranged in the opening and faces the outside of the shell; coaxial through holes are formed in the tw