A heating module for additive manufacturing, the heating module comprising: a plurality of heating devices , at least one module frame for supporting the plurality of heating devices , characterized in that each heating device comprises: a heating source ; a reflective cover covering the heating source and formed in a curved shape, an inner surface of the reflective cover facing towards the heating source , the inner surface being made of thermal radiation reflective material; a cover rotating unit for rotating the reflective cover ; a rotation controlling unit for controlling rotation of the cover rotating unit , wherein the rotation controlling unit controls the cover rotating unit to rotate the reflective cover so as to modulate a heating direction of the heating device to perform a scanning heating process for irradiating different areas; and a heating source holder for holding the heating source , the reflective cover , the cover rotating unit and the rotation controlling unit ; and in that heating directions of the plurality of heating devices can be modulated so that the plurality of heating devices irradiate different areas or different locations of a specific area according to a set modulating mode during a complementary scanning heating procedure performed by the plurality of heating devices . a plurality of heating devices , at least one module frame for supporting the plurality of heating devices , characterized in that each heating device comprises: a heating source ; a reflective cover covering the heating source and formed in a curved shape, an inner surface of the reflective cover facing towards the heating source , the inner surface being made of thermal radiation reflective material; a cover rotating unit for rotating the reflective cover ; a rotation controlling unit for controlling rotation of the cover rotating unit , wherein the rotation controlling unit controls the cover rotating unit to rotate the reflective cover so as to modulate a heating direction of the heating device to perform a scanning heating process for irradiating different areas; and a heating source holder for holding the heating source , the reflective cover , the cover rotating unit and the rotation controlling unit ; and in that heating directions of the plurality of heating devices can be modulated so that the plurality of heating devices irradiate different areas or different locations of a specific area according to a set modulating mode during a complementary scanning heating procedure performed by the plurality of heating devices . a heating source ; a reflective cover covering the heating source and formed in a curved shape, an inner surface of the reflective cover facing towards the heating source , the inner surface being made of thermal radiation reflective material; a cover rotating unit for rotating the reflective cover ; a rotation controlling unit for controlling rotation of the cover rotating unit , wherein the rotation controlling unit controls the cover rotating unit to rotate the reflective cover so as to modulate a heating direction of the heating device to perform a scanning heating process for irradiating different areas; and a heating source holder for holding the heating source , the reflective cover , the cover rotating unit and the rotation controlling unit ; and in that heating directions of the plurality of heating devices can be modulated so that the plurality of heating devices irradiate different areas or different locations of a specific area according to a set modulating mode during a complementary scanning heating procedure performed by the plurality of heating devices . <EOS>