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 (F) side of the vehicle and a vehicle interior space on a rear (R) 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 (P) 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 (C4) at which the protecting member and the dash panel are fixed to each other and above the contact point (P), 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 (F) side of the vehicle and a vehicle interior space on a rear (R) 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 (P) 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 (C4) at which the protecting member and the dash panel are fixed to each other and above the contact point (P), a guide surface arranged to face the weight component and configured such that a contact point (P) 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 (C4) at which the protecting member and the dash panel are fixed to each other and above the contact point (P), 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 . <EOS>