The utility model discloses a solve the problem that prior art existed, find an ultrasonic receiving device convenient to dismouting. Including device main part and fixing device, the last opening fixed slot up that is equipped with of fixing device, be equipped with the ultrasonic wave receiver in the device main part, device main part rear side is equipped with and is used for fixing the buckle with the fixed slot complex. Through implementing the utility model discloses can gain following useful technological effect: plug -and -play is fixed with fixed slot to fixed buckle in the ultrasonic wave receiver accessible device main part to in dismouting, maintenance and change.