Aiming at requirement of non-magnetic heating for atomic vapor cell of atomic magnetic sensor and solving the problem of low signal-to-noise ratio( SNR) of resonant spectrum signal of magnetometer,a method of differential pair wiring is used and a square copper non-magnetic heating coil is fabricated on a ceramic substrate by adopting a micro-machined film process. Steady-state magnetic field intensity distribution of the coil is analyzed by COMSOL Multiphysics under 2. 2mA DC condition and combined with co...