A vehicle acceleration suppression device, comprising: a drive force manipulation amount detector configured to detect a drive force manipulation amount that is a manipulation amount of a drive force instruction manipulation element manipulated by a driver to instruct a drive force; an acceleration controller (10G, 10K) configured to control acceleration of a vehicle depending on the drive force manipulation amount detected by the drive force manipulation amount detector; a surrounding environment recognition unit configured to recognize an environment surrounding the vehicle based on detection information of a surrounding environment recognition sensor provided in the vehicle; a parking frame certainty degree set unit configured to set a parking frame certainty degree indicative of a degree of certainty that there is a parking frame in a travel direction of the vehicle for a possible parking frame based on the environment recognized by the surrounding environment recognition unit; and an acceleration suppression unit (10J, 10K) configured to suppress the acceleration to be controlled by the acceleration controller (10G, 10K) such that a suppression degree of the acceleration is increased, as the parking frame certainty degree is higher, based on the parking frame certainty degree set by the parking frame certainty degree set unit, wherein the drive force is controlled for suppression by suppressing the acceleration of the vehicle which depends on the manipulation amount of the drive force instruction manipulation element, and the vehicle acceleration suppression device being characterized in that, in a situation where a plurality of possible parking frames are detected, the parking frame certainty degree set unit is configured to correct a first parking frame certainty degree based on a second parking frame certainty degree. a drive force manipulation amount detector configured to detect a drive force manipulation amount that is a manipulation amount of a drive force instruction manipulation element manipulated by a driver to instruct a drive force; an acceleration controller (10G, 10K) configured to control acceleration of a vehicle depending on the drive force manipulation amount detected by the drive force manipulation amount detector; a surrounding environment recognition unit configured to recognize an environment surrounding the vehicle based on detection information of a surrounding environment recognition sensor provided in the vehicle; a parking frame certainty degree set unit configured to set a parking frame certainty degree indicative of a degree of certainty that there is a parking frame in a travel direction of the vehicle for a possible parking frame based on the environment recognized by the surrounding environment recognition unit; and an acceleration suppression unit (10J, 10K) configured to suppress the acceleration to be controlled by the acceleration controller (10G, 10K) such that a suppression degree of the acceleration is increased, as the parking frame certainty degree is higher, based on the parking frame certainty degree set by the parking frame certainty degree set unit, wherein the drive force is controlled for suppression by suppressing the acceleration of the vehicle which depends on the manipulation amount of the drive force instruction manipulation element, and the vehicle acceleration suppression device being characterized in that, in a situation where a plurality of possible parking frames are detected, the parking frame certainty degree set unit is configured to correct a first parking frame certainty degree based on a second parking frame certainty degree.