Gradient magnetometer

The utility model discloses a gradient magnetometer, comprising at least two NV color center magnetic sensor probes which are arranged in a linear shape, a surface shape or a three-dimensional shape; the control device is connected with the NV color center magnetic sensor probes and used for providing excitation for the NV color center magnetic sensor probes so that the NV color center magnetic sensor probes can generate fluorescence electric signals and collect the fluorescence electric signals, and the NV color center magnetic sensor probes are controlled according to the fluorescence electric signals and the position information of the at least two NV color center magnetic sensor probes. The magnetic field gradient of the space where the at least two NV color center magnetic sensor probes are located is obtained. The gradient magnetometer can synchronously measure the magnetic field intensity and the magnetic field gradient so as to more comprehensively measure the magnetic field environment, provides more