The work aims to take the new product of basaltic low-level radioactive solid waste box as the research object to study its mechanical properties. Based on the performance of basaltic composite material, referring to the relevant standards of low and medium level radioactive solid waste container-steel box, the structural design of basaltic low-level radioactive solid waste box was completed by ANSYS finite element software, and its mechanical calculation was calibrated according to the rules of standards such as EJ1076-2014. With FB-Ⅲ type solid waste box as an example, it was composed of Q235B steel frame and 4.5 mm thick basaltic composite material box surface. By using the static and display dynamics modules in ANSYS finite element software, the structure of basaltic waste box was analyzed by mechanical simulation such as stacking yardage, top lifting, fork lifting, falling, etc., and the mechanical results obtained were less than the mechanical results required by the EJ1076-2014. The structural design of the basaltic low-level radioactive solid waste box meets the design requirements and its mechanical property assessment results comply with the requirements of the EJ1076-2014.