Straight cylinder type telescopic negative pressure massager

The utility model discloses a straight cylinder type telescopic negative pressure massager which comprises a shell, a telescopic driving device, a flexible massage cylinder, a negative pressure generating device and a telescopic piece, the telescopic driving device, the flexible massage cylinder and the negative pressure generating device are arranged in the shell, the telescopic piece can horizontally move in a reciprocating mode in the length direction of the shell, and a telescopic part of the telescopic driving device is connected with the telescopic piece. One end of the flexible massage cylinder is provided with a connecting piece and an air suction hole, the telescopic piece is detachably connected with the connecting piece, so that the first conductive piece and the second conductive piece are in contact with each other to be in conductive fit, the first air communication part and the second air communication part are in butt joint and communicated with each other, and the air suction hole corresponds