Interphone capable of realizing talkback without pressing PTT key by finger

The utility model relates to the technical field of talkback equipment, in particular to an interphone capable of realizing talkback without pressing a PTT (push-to-talk) button by a finger and an interphone shell, the front surface of the interphone shell is provided with a PTT call button which protrudes outwards, and the PTT call button protrudes outwards from the interphone shell by 6-16mm; a microphone hole is further formed in the front surface of the interphone shell, and a microphone is arranged in the microphone hole and used for collecting voice information; the back of the interphone housing is provided with a back clip, and the back clip and the PTT call button are respectively located at two opposite sides of the interphone housing. Compared with the prior art, according to the interphone capable of realizing talkback without pressing the PTT key by the fingers, when a user cannot conveniently press the PTT call key by the fingers, the PTT call key can be pressed by the head, the face, the hand a