The invention discloses a horizontal type puncture compression mechanism for a plastic bottle recycling machine. The horizontal type puncture compression mechanism comprises a compression box body, apropelling device and a puncture extrusion device, wherein a material inlet is formed in the upper part of the compression box body, a recovery opening is formed in the lower part of the compression box body, a placement frame is arranged above the recovery opening, and a front baffle and a rear baffle are respectively arranged on the two sides of the placement frame; and the puncture extrusion device is installed on the propulsion device, the puncture extrusion device comprises a plurality of extrusion columns and a spring needle, the spring needle is composed of a spring and a needle head, the spring is arranged in an inner cavity of the extrusion column at one end of the extrusion column, one end of the needle head is fixedly connected with the spring, and a needle point at the other end is exposed out of the inner cavity of the extrusion column. When the puncture extrusion device linearly moves in the compression box body, the puncture extrusion device penetrates through a puncturehole formed in the front baffle plate, plastic bottles are punctured by the spring needle, and the extruded plastic bottles are extruded by the extruding column, so that the compression is more thorough, the rebound deformation is not easy to occur, and subsequent recovery treatment is facilitated.