The invention discloses a construction method for reinforcing a cantilever scaffold through recyclable embedded bolts. The construction method is characterized by comprising the steps that combined pieces are formed by combining lock buckles, the embedded bolts and plastic pipes, stand columns of the embedded bolts are inserted into the plastic pipes, the lock buckles are buckled to the lower portions of the embedded bolts, and the combining positions of the plastic pipes and the embedded bolts are lubricated through inorganic lubricating oil; the combined pieces are fixed to a construction formwork through nails, steel bars are bound, concrete is poured, it is ensured that the embedded bolts cannot move in the pouring concrete, and then the cantilever scaffold is erected; after the cantilever scaffold is dismantled, the embedded bolts are downwards knocked through a hammer and drop out from one side of the construction formwork, and the embedded bolts and the lock buckles are recycled; the plastic pipes and the nails are removed; and finally, holes are repaired through high-grade mortar. The construction method has the advantages that the defects that resources of traditional embedded bolts are wasted, and cost is wasted are overcome, the embedded bolts are recycled on the premise that the project safety, quality and schedule are not affected, and the construction cost is reduced.