Concrete embedded bolt assembly allowing to be taken out

The invention belongs to the field of building construction and particularly relates to a concrete embedded bolt assembly allowing to be taken out. The concrete embedded bolt assembly allowing to be taken out is characterized by comprising a double-thread screw, a long nut with protrusions, a nut and a gasket. A thread section and a polish rod section are arranged on the double-thread screw, and an outer hexagonal boss is arranged at the right end of the double-thread screw. The clamping piece protrusions are arranged on the outer wall of the long nut with the protrusions, and a clamping groove is formed in the right end of the long nut with the protrusions and used for being fastened with an anchored plate. The long nut with the protrusions is formed by combining multiple nut pieces. The left of the double-thread screw is screwed into the long nut with the protrusions, the right end of the double-thread screw is located outside the long nut with the protrusions, the right end of the double-thread screw is sleeved with the gasket, and the nut is screwed at the right end of the double-thread screw. The assembly not only can meet the wall attachment stress requirement of a construction tool, but also has detachable performance, so that the assembly is used in a circulation mode and does not affect an attachment wall structurally or later period construction.