Syringe (1, 101) comprises a housing (2), the housing (2) in a rotatable and longitudinal central axis (50) dosing mechanism which is held stationary in the direction of the (18) ing. The dosing mechanism via a first threaded connection portion (19), the injection sleeve is displaceably held in the direction of the housing (2) with respect to the relative rotation and the longitudinal central axis (50) It is coupled with (17). The dosing mechanism (18), said rotating relative to the housing (2) when adjusting the extrusion dose of injection liquid, the injection sleeve (17) is terminated by the first threaded connection portion (19) It moves to the side direction (30). When extruding the adjusted doses of the injection solution, said injectable sleeve (17) is moved toward the proximal end direction (31) by said first threaded connection portion (19), the dosing mechanism (18) the counter-rotating relative to the housing (2). To enable the auto-injector syringe according to the present invention, the syringe (1) is supported and a second end to said injection sleeve with a first end portion (70) (17) ( with 71) has a spring (9) supported relative to said housing (2), moving said spring, said injection sleeve when extruding the injection solution (17) the proximal-side direction to the (31) It is, thereby causing extrusion of the adjusted doses of the injection solution.