The invention relates (designs) a spherical four rod rotating device for a receiver spatial posture adjusting device. By means of a simple single-input motor control system, rotary angle and position steering adjustment can be performed on a space radio telescope antenna in the three-dimension space. The device comprises a multifunctional external connecting rod 1, a rotary rod mechanism 2 and a base 3. The multifunctional external connecting rod 1 and the rotary rod mechanism 2 are connected through a hinge, and the rotary rod mechanism 2 and the base 3 are connected through a hinge. By controlling a motor 31 on the base 31 to rotate forwardly or reversely and stop and the transmission of the rotary rod mechanism 2, the multifunctional external connecting rod 1 can reach the determined position in the space. The device has the advantages that structure is compact, the operation space is large, the position and posture of a receiver can be adjusted, and the control is performed easily.