A deformation suppressing structure of a vehicle, the deformation suppressing structure being configured to suppress a deformation of the vehicle at a time of a collision, the deformation suppressing structure comprising: a dash panel separating a driving unit space on a front side of the vehicle and a vehicle interior space on a rear side of the vehicle from each other, the driving unit space providing a space for installing a weight component, and the vehicle interior space providing a space for a passenger to ride on the vehicle; a brake component for controlling a hydraulic pressure of a brake system disposed inside the driving unit space and between the weight component and the dash panel; and a protecting member fixed to the dash panel and accommodating the brake component inside the protecting member, wherein the protecting member comprises: a guide surface arranged to face the weight component and configured such that a contact point at which the guide surface contacts the weight component changes during a backward movement of the weight component at the time of the collision of the vehicle; and a contacting portion arranged to contact the dash panel at a location above a fixing point at which the protecting member and the dash panel are fixed to each other and above the contact point, the deformation suppressing structure being characterized in that: the brake component comprises a hydraulic pressure circuit 201 having a flow channel where brake oil as hydraulic oil flows inside the hydraulic pressure circuit portion and a control board configured to switch the flow channel of the hydraulic pressure circuit portion. a dash panel separating a driving unit space on a front side of the vehicle and a vehicle interior space on a rear side of the vehicle from each other, the driving unit space providing a space for installing a weight component, and the vehicle interior space providing a space for a passenger to ride on the vehicle; a brake component for controlling a hydraulic pressure of a brake system disposed inside the driving unit space and between the weight component and the dash panel; and a protecting member fixed to the dash panel and accommodating the brake component inside the protecting member, wherein the protecting member comprises: a guide surface arranged to face the weight component and configured such that a contact point at which the guide surface contacts the weight component changes during a backward movement of the weight component at the time of the collision of the vehicle; and a contacting portion arranged to contact the dash panel at a location above a fixing point at which the protecting member and the dash panel are fixed to each other and above the contact point, a guide surface arranged to face the weight component and configured such that a contact point at which the guide surface contacts the weight component changes during a backward movement of the weight component at the time of the collision of the vehicle; and a contacting portion arranged to contact the dash panel at a location above a fixing point at which the protecting member and the dash panel are fixed to each other and above the contact point, the deformation suppressing structure being characterized in that: the brake component comprises a hydraulic pressure circuit 201 having a flow channel where brake oil as hydraulic oil flows inside the hydraulic pressure circuit portion and a control board configured to switch the flow channel of the hydraulic pressure circuit portion.