The invention relates to a locking prevention level meshing gear set and a bidirectional meshing carrying platform. The meshing gear set comprises a driving gear and a driven gear which is meshed with the driving gear, wherein main tooth-divide arrises are arranged at one ends of the driving gear teeth of the driving gear, and assistant tooth-divide arrises are arranged at one ends of the driven gear teeth of the driven gear; the driven gear is axially moved towards one sides of the assistant tooth-divide arrises, and the driven gear is arranged on one side of the driving gear teeth of the driving gear; at an initial position, the driving gear and the driven gear of which both the left and the right ends are corresponding are meshed, and the two gears which are meshed can be separated from or meshed with each other in an axial direction. Tooth-divide arrises are arranged on the both sides of the teeth, so that during axially movement and meshing, the two gears are naturally guided to mesh by the corresponding tooth-divide arrises, two meshing gears which are in a transmission relationship can freely and axially separate and mesh, and the meshing gear set can be used for two mechanisms which are levelly and relatively moved in the transmission relationship.