β-tricalcium phosphate (β-TCP) has biodegradability and biocompatibility, but its inherent brittleness limits its application in load-bearing implants. In order to further improve the mechanical property and biocompatibility of β-TCP, β-TCP/NC (TNC) composite scaffold with nano clay (NC) as additive and the porous structure of the scaffold has a pore size of 200-300 μm was prepared by digital light processing (DLP) technique. When the content of NC is 10% (in mass), the sintering shrinkage of each structural feature of the support (TNC10) is the smallest. Addition of NC does not change the phase composition of TCP, and Si and Mg elements are evenly distributed on the surface of the scaffold. Addition of NC can improve the compression strength of TCP scaffolds. NC (particle size < 500 nm) is fused in the gap of TCP particles. Compared with pure TCP scaffolds, the compression strength of TNC10 is increased by 10%. In addition, the specific surface area of TNC10 group was more than 2 times higher than that of pure TCP. TNC degradation rate is faster while Ca²⁺, Mg²⁺, Si⁴⁺, and Li²⁺ can be continuously released, which maintains a weakly alkaline environment. The results demonstrate that the addition of NC has a certain promotion effect on the mechanical strength, degradation performance β-TCP scaffolds. Porous bioceramic scaffolds with good physical, chemical property by DLP method have great application prospects in the field of bone repair.