Modular bone scaffold and splicing method

The invention discloses a modular bone scaffold and a splicing method, the modular bone scaffold comprises a plurality of square bone scaffold basic units and a plurality of fan-shaped bone scaffold basic units, the edges of the square bone scaffold basic units are provided with splicing structures, and the non-fan-shaped edges of the fan-shaped bone scaffold basic units are provided with splicing structures. The fan-shaped bone scaffold basic units comprise arc fan-shaped bone scaffold basic units and bevel fan-shaped bone scaffold basic units, and each bevel fan-shaped bone scaffold basic unit is formed by replacing an arc edge with an obtuse-angle edge; each splicing structure is in a convex or concave equilateral trapezoid shape, and a plurality of square bone scaffold basic units form a rectangle or a square through the matched splicing structures; the plurality of square bone scaffold basic units and the plurality of fan-shaped bone scaffold basic units form a quasi-circular shape or a quasi-triangular