The invention discloses a parking place sensing system, which comprises a master control system, a mobile phone terminal, a parking place displayer, a radar system, parking place sensors and a timing system. The master control system is connected with the mobile phone terminal, the parking place displayer, the radar system and the timing system; and the parking place displayer is connected with the parking place sensors. The parking place sensing system integrates computer data, image processing technology and electronic control technology, thereby realizing highly-automated and intelligent management of open road parking places, improving parking efficiency of users, allowing traffic policemen to manage the road parking places efficiently, conveniently, accurately and impartially, and preventing the problem of road congestion due to difficulty in parking; and under the effect of the radar system, barrier detection range is enlarged, especially the blind area, thereby reducing accident occurrence rate and ensuring parking accuracy.