Atomic magnetometer heading error testing device

The invention provides an atomic magnetometer heading error testing device which comprises a magnetic shielding barrel, a non-metal coil framework, a fixing tool, an optical pump magnetometer, a supporting assembly, a worm wheel, a worm assembly and an atomic magnetometer, the non-metal coil framework is arranged in the magnetic shielding barrel, and the worm wheel is arranged on the supporting assembly. The worm assembly is arranged on the supporting assembly in a supporting mode and connected with the worm wheel in a meshed mode, one end of the worm assembly is arranged inside the magnetic shielding barrel, the other end of the worm wheel assembly is arranged outside the magnetic shielding barrel, the atomic magnetometer is fixedly arranged on the worm wheel, and the center of an air chamber of the atomic magnetometer is coaxial with the worm wheel. The optical pump magnetometer and the atomic magnetometer are both located in the range of a magnetic field uniform area of the non-metal coil framework. The fi