To provide a deodorant for basic gas which is easily produced at a low cost and also effectively removes basic gas such as ammonia and trimethylamine in particular.

The deodorant for a basic gas is produced by sticking one side or both sides of organic acid and the metallic salt thereof on an inorganic porous base material. Silica gel, zeolite, activated alumina, sepiolite, attapulgite or bentonite or substance containing them as a main component are used as the raw material of the inorganic porous base material. Further, at least one kind of acid selected from a group consisting of tartaric acid, malic acid, citric acid, lactic acid, succinic acid, maleic acid, phthalic acid and nicotinic acid is used as organic acid.