The present invention provides a solid pharmaceutical composition superior in the stability and dissolution property, wherein the drug dissolution property of a solid dosage form containing a fat and oil-like substance having a low melting point is improved. The present invention provides a solid pharmaceutical composition containing an active ingredient, a fat and oil-like substance having a low melting point and a low viscosity binder, and a method of improving dissolution of an active ingredient from a solid pharmaceutical composition containing the active ingredient and a fat and oil-like substance having a low melting point, which includes using a low viscosity binder.
