A pharmaceutical composition comprising: an active ingredient consisting of 4-(3-chloro-4-(cyclopropylaminocarbonyl)aminophenoxy)-7-methoxy-6-quinolinecarboxamide, salt thereof, or solvate of the foregoing and (i) a compound, a 5% (w/w) aqueous solution or suspension of which has a pH of 8 or more, and/or (ii) silicic acid, salt thereof, or solvate of the foregoing is a highly stable pharmaceutical composition, wherein under humidified and heated storage conditions, the decomposition of said compound is sufficiently reduced, or the gelation on the surface of the pharmaceutical composition is sufficiently inhibited.
