Fastening device for building engineering construction formwork

The utility model belongs to the technical field of building engineering construction templates, and particularly relates to a fastening device for a building engineering construction template. The device comprises a bottom plate, a top plate is arranged over the bottom plate, a supporting pipe is vertically arranged between the top plate and the bottom plate, the lower end of the supporting pipe is sleeved with a first cylinder, and a groove of an annular structure is formed in the top of the bottom plate and used for the first cylinder to be inserted in; the upper end of the supporting pipe is sleeved with a second cylinder, a groove of an annular structure is formed in the bottom of the top plate, the second cylinder is inserted into the groove, the second cylinder is fixed to the supporting pipe through a locking assembly, and the lower end of the supporting pipe is filled with filler. According to the design, the contact area of the supporting pipe and the formwork is increased through the top plate, str