More particularly, the present invention relates to a process for producing a heat-resistant ABS resin, which comprises 42 to 52% by weight of an alpha-methylstyrene monomer, 15 to 25% by weight of a vinyl cyan monomer, 2 to 6% by weight of an aromatic rubbery copolymer, 2 to 6% by weight of rubber and 15 to 35% by weight of reaction solvent. According to the present invention, it is possible to provide a method for producing a heat-resistant ABS resin having less thermal stability and mold deposit than a conventional heat-resistant ABS resin, and an ABS resin excellent in heat resistance produced by the above method.
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