Leveling instrument for detecting flatness of indoor wall surface

The utility model relates to the technical field of leveling instruments, in particular to a leveling instrument for indoor wall flatness detection, which comprises a first leveling instrument component, and one end of the first leveling instrument component is hinged with a second leveling instrument component through a rotating groove and a rotating pin; the first horizontal ruler assembly comprises a ruler body, a first bubble and a handle are arranged at the top of the ruler body, a second bubble and an instrument panel are arranged outside the ruler body, an extrusion block is connected to the bottom of the ruler body, an insertion strip is inserted into the extrusion block, and a connecting plate is connected to the outer wall of the insertion strip; and the other end of the connecting plate is connected with a rubber plate. The plug-in type rubber layer is arranged at the detection end, unnecessary collision generated in the contact process of the leveling instrument and the wall can be reduced, safety