The invention discloses a magnetic field assisted preparation abrasive particle arrangement 3D printing grinding wheel and a method and device thereof. The magnetic field assisted preparation abrasive particle arrangement 3D printing grinding wheel comprises magnetic abrasive particles and a bronze bonding agent; the magnetic abrasive particles comprise abrasive material particles, magnetic micro powder and a metal bonding agent; the bronze bonding agent is mainly a Cu-Sn-Ni (copper, tin and nickel) alloy. The preparation device of the magnetic field assisted preparation abrasive particle arrangement 3D printing grinding wheel comprises a processing platform, a guide rail, a walking mechanism, a stepping motor, a grinding wheel base body workbench and a magnetic field generation device, and the walking mechanism, the stepping motor, the grinding wheel base body workbench and the magnetic field generation device are arranged on the guide rail. The preparation method includes the steps that the abrasive material particles, the magnetic micro powder and the metal bonding agent are selected and stirred and mixed uniformly, and the magnetic abrasive particles are obtained; by means of a laser sprayer on the walking mechanism, the magnetic abrasive particles are sprayed and scattered on the surface of the bronze bonding agent on the grinding wheel base body workbench; under the action of an external magnetic field, the magnetic abrasive particles are directionally and regularly arranged; by moving a focusing laser head, the magnetic abrasive particles are scanned and sintered to the bronze bonding agent; by means of a gas blowing recycling device, the magnetic abrasive particles not scanned and sintered by laser are blown to the recycling device; and the above steps are repeated, the grinding wheel with the abrasive particles regularly arranged is manufactured.