The invention provides a periscopiec camera auxiliary device. A triangular bracket is arranged on the ground; a chute is formed in a tray at the upper end of the triangular bracket; a base comprises a housing used for placing a camera and a wedge-shaped block arranged at the bottom of the housing; the housing is arranged in the chute by virtue of the wedge-shaped block; a periscopiec structure is formed in the housing and comprises a horizontal sleeve, a lower break angle sleeve, a vertical sleeve and an upper break angle sleeve; a lens hole is formed in the joint of the horizontal sleeve and the housing; one end of the lower break angle sleeve is connected with the end of the horizontal sleeve by virtue of an adjustable spline structure; the other end of the lower break angle sleeve is connected with one end of the vertical sleeve by virtue of a threaded structure; the other end of the vertical sleeve is connected with the upper break angle sleeve by virtue of a bearing assembly; a lower reflector is arranged at the break angle of the lower break angle sleeve; an upper reflector is arranged at the break angle of the upper break angle sleeve. According to the device disclosed by the invention, shooting activities in a wider range can be realized, and the problems such as camera shake and virtual focus caused by extremely wide shooting range are solved.