Problem to be solved. To provide a filling kneading machine of a steamed meat bun, the machine that enables filling kneading uniformly and hygienically. Solution. A filling kneading machine of a steamed meat bun comprises a working space 2, five seasoning cases 10 provided at an upper edge of the working space 2, a connecting plate installed in a lower edge of the seasoning case 10, a seasoning partition plate installed in a lower edge of the connecting plate, reciprocating rotating parts 9 movably connected to the seasoning partition plate, a driving motor 5 installed in the lower edge of the reciprocating rotating parts 9, a universal joint 6 installed by a front edge of the driving motor 5, vertical reciprocation transmission parts 8 installed in the front edge of the universal joint 6, a supporting rod movably connected to the vertical reciprocation transmission parts 8, first elastic restoration parts...