Safety protection device for building construction

The utility model discloses a safety protection device for building construction, which relates to the field of safety protection for building construction and comprises a first baffle plate, a second baffle plate is placed in the first baffle plate, a third baffle plate is placed in a fourth baffle plate, and a group of first sliding grooves and first sliding columns are arranged on the upper portion of each of the second baffle plate and the third baffle plate. A second sliding column is arranged at the lower end of the fourth shielding plate, a second sliding groove corresponding to the second sliding column of the fourth shielding plate is formed in the first shielding plate, a fixing column is arranged at the bottom of the side face of the third shielding plate, and a row of fixing grooves corresponding to the fixing column arranged at one end of the third shielding plate are formed in the second supporting column. The device can move up and down, the bolts are fixed at different heights, the sliding col