Lockstitch wallboard with splicing structure

The utility model provides a lockstitch wallboard with a splicing structure, which comprises a main body (1), a convex part (2), a concave part (3) and a clearance groove (4), the main body (1) is provided with the convex part (2) and the concave part (3), and an acute included angle is formed between the upper surface of the convex part (2) and the right side surface of the upper part of the lockstitch wallboard; an obtuse included angle is formed between the upper surface of the concave part (3) and the left side surface of the upper part of the lockstitch wallboard; matching installation ofthe two lockstitch wallboards is achieved through insertion matching of the convex portion (2) of one lockstitch wallboard and the concave portion (3) of the other lockstitch wallboard, and after installation, an included angle a is formed between the left side face of the upper portion of the other lockstitch wallboard and the right side face of the upper portion of the lockstitch wallboard. Andthe included angle a rang