PROBLEM TO BE SOLVED: To provide a pest controlling agent giving a secure effect and being capable of being safely used, specifically a cyclic amine compound or a salt thereof useful as an active ingredient of an ectoparasite controlling agent.SOLUTION: A cyclic amine compound represented by the formula (I) or a salt thereof is provided. In the formula, Cyrepresents a phenyl group or the like； Ris a substituent of Cyand each independently represent an alkyl group which may have a substituent； m represents the number of Rand is any integer of 0 to 5； Cyrepresents a 4-trifluoromethyl phenyl group or the like； Ris a substituent of Cyand each independently represent an alkyl group which may have a substituent； n represents the number of Rand is any integer of 0 to 5； R, R, R, R, R, R, Rand Reach independently represent a hydrogen or the like； Rrepresents a hydrogen or the like； and p represents the number of Rand Rand is any integer of 0 to 1.【課題】効果が確実で安全に使用できる有害生物防除剤、特に外部寄生虫防除剤の有効成分として有用な環状アミン化合物またはその塩の提供。【解決手段】式（I）で表される環状アミン化合物又はその塩。但し、Ｃｙ1はフェニル基などを示し；Ｒ10はＣｙ1の置換基であり且つそれぞれ独立に置換基を有してもよいアルキル基などを示し；ｍはＲ10の数を示し且つ０～５のいずれかの整数であり；Ｃｙ2は４－トリフルオロメチルフェニル基などを示し；Ｒ11はＣｙ2の置換基であり且つそれぞれ独立に置換基を有してもよいアルキル基などを示し；ｎはＲ11の数を示し且つ０～５のいずれかの整数であり；Ｒ1a、Ｒ1b、Ｒ2a、Ｒ2b、Ｒ3a、Ｒ3b、Ｒ4a、およびＲ4bはそれぞれ独立に水素などを示し；Ｒ5は水素などを示し；ｐはＲ4bとＲ5の数を示し且つ０～１のいずれかの整数である。【選択図】なし
