A spiral conveying mesh chain which pertains to the field of conveying equipment includes a conveying mesh chain main body. The edge of the inner side of the conveying mesh chain main body is uniformly provided with passive teeth. The passive teeth are used to engage with driving teeth on the outer periphery of a rotating drum for driving the conveying mesh chain main body to rotate. The contact surface of the passive tooth and the driving tooth is one item selected from a group consisting of an inclined surface, an arc-shaped surface, a V-shaped contact surface, and a T-shaped contact surface, so that the force direction between the passive tooth and the driving tooth is inwardly deviated relative to the rotation direction of the conveying mesh chain.