Disclosed is an epoxy resin composition for semiconductor encapsulation which has good soldering heat resistance and excellent productivity. Also disclosed is a semiconductor device. Specifically disclosed is an epoxy resin composition for semiconductor encapsulation which contains (A) an epoxy resin, (B) a phenol resin, (C) an organopolysiloxane (C-1) having a carboxyl group and/or a reaction product (C-2) of an organopolysiloxane having a carboxyl group and an epoxy resin, and (D) a fatty acid triglyceride. |