To provide a novel manufacturing method of 2,2,2-trifluoroethylamine.

The manufacturing method of 2,2,2-trifluoroethylamine or a salt thereof comprises reacting ammonia with 2,2,2-trifluoroethyl sulfonate represented by formula (I): CF3CH2OL [wherein L is Ts {wherein Ts is a group represented by formula (1) (wherein R1, R2, R3, R4 and R5 are each independently a hydrogen atom, 1-5C alkyl group, 1-3C perfluoroalkyl group, 1-3C alkoxy group, 1-5C alkylcarbonyl group, 1-3C alkoxycarbonyl group, nitro group or halogen atom)} or Ms {wherein Ms is CH3(CH2)nSO2- (wherein n is an integer of 0-5; and Ms is linear or branched one when n is 3-5)}].