The invention relates to a nuclear fuel element transferring apparatus comprising a container housing (5). A telescopic rotating mechanism and a swinging door structure controlling the telescopic rotation mechanism to extend out of the container housing are disposed in the container housing (5); the telescopic rotating mechanism is formed by a rotating pipe (6) and a telescopic pipe (9) disposed in the rotating pipe (6); the tail end of the rotating pipe (6) is connected with a rotating wheel (21) disposed in a tail end flange (17) of the container housing; the head end of the telescopic pipe (9) is provided with a guide wheel and the tail end is equipped with a push rod (8); the push rod (8) passes through the rotating wheel (21) to be connected with the telescopic pipe (9); and the swinging door structure is formed by a swinging door seat and a swinging door (14) disposed in the swinging door. Horizontal rotation, vertical rotation and linear telescopic actions are achieved via mechanical structures, so element receiving, transportation and downloading functions are achieved besides the shielding function; and the nuclear fuel element transferring apparatus is simply structured and has reliable performance.