The invention relates to a residual-current circuit breaker (RCCB), especially a test pressing device for a RCCB. The technical scheme of the invention is that the device is characterized in that the device also comprises a movable block; the movable block is disposed on the housing of the RCCB through a shaft; the movable block comprises an upper side surface, a lower side surface, a bottom surface, an upper end surface, a left side surface, and a right side surface; the upper and lower side surfaces respectively abut against or are close to the housing of the RCCB; the left side surface is provided with two surfaces at different heights, wherein one surface abuts against or is close to the housing of the RCCB, and the other surface abuts against or is close to a conductive piece, thereby achieving the limiting of the conductive piece. According to the above technical scheme, a spring moves in a groove when a button is pressed, thereby guaranteeing that the spring is not liable to be damaged and fall.