The invention relates to an all-purpose cutter head end-tooth disc meshing and disengaging structure which is characterized in that a fixed end-tooth disc is connected to a first box by a first bolt, a movable end-tooth disc is connected to a second box by a second bolt and meshed with the fixed end-tooth disc; the first box is provided with a connection bolt slot and a connection bolt is arranged in the bolt slot, a positioning bush is fixed in the middle part of the connection bolt through pins; the cap of the nut is firmly connected on the second box by a third bolt, the nut seat is connected with the screw thread of the connection bolt, a limiting cover is connected to the tip of the connection bolt, a positioning mounting spigot is processed on the front end of the nut seat and is matched with the step of the cap of the nut. With simple and compact structure and convenient operation, the invention can reasonably finish the meshing and the disengaging actions of the end-tooth disc in the all-purpose cutter head, facilitating reasonable utility of the end-tooth disc of the all-purpose cutter head and helping improve the processing efficiency of the all-purpose cutter head.