To provide resin particles which are excellent in heat-resistant storage stability and thermal characteristics and have uniform particle diameters.

This core-shell type resin particle (D) composed of one or more filmy shell layers (P) formed from the first resin (a) and one core layer (Q) comprising the second resin (b) is characterized in that the weight ratio of (P) and (Q) is (0.1:99.9) to (70:30); the volatile content of (D) is ≤2 wt.%; (D) has a flow temperature of 70 to 130°C; and (b) has a glass transition temperature of 35 to 80°C, and a flow temperature of 50 to 85°C.