The invention discloses a plug-in positioning type butterfly valve which comprises a valve body, a valve plate, a connecting sleeve, a drive rod and a telescopic assembly. The telescopic assembly comprises a positioning block, a telescopic cylinder and a telescopic body. The drive rod moves downwards so as to drive the positioning block to move downwards, and the telescopic cylinder is compressedin a telescopic groove of the positioning block at the time; when the telescopic cylinder moves to a clamping groove, the telescopic cylinder can be pushed by the elasticity of the telescopic body soas to be inserted and clamped into the clamping groove, and the drive rod can be rotated to drive the valve plate to rotate at the time; and after adjusting, the drive rod continuously moves downwards, the telescopic cylinder moves downwards, meanwhile, the telescopic cylinder can move to the inner part of the telescopic groove along a conical sliding groove, and when the telescopic cylinder is completely inserted into the telescopic groove of the positioning block, the drive rod is rotated at 90 degrees, so that the drive rod and the telescopic assembly can be pulled out. Therefore, the driverod and the valve plate are movably connected, and the drive rod is convenient to disassemble and assemble.