Provided are a solid composite formulation for oral administration, the solid composite formulation including: an ezetimibe granules-part including ezetimibe, said ezetimibe having a particle size distribution wherein the average particle size d(0.9) for the bottom 90% is about 10 μm or less; and a rosuvastatin mixture-part including rosuvastatin or a pharmaceutically acceptable salt thereof, and a method of preparing the composite formulation.