The invention discloses a novel spherical parallel mechanism of an automobile coating robot. The novel spherical parallel mechanism of the automobile coating robot comprises a fixed platform and a movable platform, and the fixed platform and the movable platform are connected together through a plurality of branched chains. A plurality of spherical grooves are formed in the upper surface of the fixed platform and the lower surface of the movable platform. Semi-spherical sleeve-joint rings are arranged at the two ends of the branched chains. Rotating balls are fixedly arranged in the sleeve-joint rings, the upper portions of the rotating balls are arranged inside the spherical grooves, and the lower portions of the rotating balls are arranged in the sleeve-joint rings. The sleeve-joint rings and the spherical grooves are connected together through buckles. Each branched chain is composed of an inner rod and an outer rod, wherein the external diameter of the inner rod is equal to the internal diameter of the outer rod, the inner rod is directly sleeved with the outer rod, and the outer surface of the inner rod and the inner surface of the outer rod are engraved with matched antiskid threads. According to the novel spherical parallel mechanism of the automobile coating robot, both assembly and disassembly are quite convenient, the branched chains are free of mutual interference by adoption of a single-branched-chain branch, the branched chains can extend out and draw back for adjustment in the operation process, and the novel spherical parallel mechanism is worthy of popularization.