In a metal powder processing equipment where metal powder (7) is sequentially laminated on a table (2) of a chamber (1) and laser beam melting or electron beam melting is performed, or cutting and shaping are performed by a rotating tool subsequently to melting, a first temperature adjusting unit is placed at a lower bottom portion of the table (2) and a second temperature adjusting unit is disposed in a state of contact with said outer wall around the entire outer wall of the chamber (1), and both units are simultaneously heated or cooled. Further, a room (6) partially enclosing a metal powder reserve tank (4) and a metal powder supply pipe (5) is provided with a third temperature adjusting unit (60), and a temperature of the third temperature adjusting unit (60) is set to an average temperature of the second temperature adjusting unit (10) before the second one is actuated. Consequently, a deterioration of dimensional precision in processing and a deterioration of metal powder quality can be prevented by keeping the heating temperature constant.