The invention relates to a variable nozzle turbocharger regulating mechanism integrated on a turbine shell, belonging to the technical field of variable nozzle turbochargers used for vehicles. The variable nozzle turbocharger regulating mechanism comprises nozzle ring fixed blades, nozzle ring adjustable blades, a mounting disc, driven gears, a driven gear ring, a driving gear, a double-rocker driving mechanism, a split-type turbine shell and a turbine shell cover board. The driven gears and the nozzle ring adjustable blades are respectively installed on the circumferences of the front and the back side faces of the mounting disc through mounting shafts of the driven gears and the nozzle ring adjustable blades. The driven gears are connected at the inner edge of the driven gear ring which is used for controlling the nozzle ring adjustable blades to revolve synchronously, and through the driven gear ring, the nozzle ring adjustable blades on the circumference can revolve synchronously. For the purpose of adapting to air motion law, the initial installation angles of the nozzle ring adjustable blades are arranged to be unequal along the circumferential direction. The width of the nozzle ring is controlled by the nozzle ring fixed blades, and the nozzle ring adjustable blades are driven by the double-rocker driving mechanism, so the accuracy and the uniformity of the adjustment of opening sizes of the nozzle ring adjustable blades are ensured.