A combination type auto dye-preparation/metering dyeing system, comprising: a control unit; a rotary table module comprising a plurality of electrical connectors, one said electrical connector being electrically connected to said control circuit for transmitting a control signal provided by said control unit, a rotary table, said rotary table comprising a tabletop having at least one slot, and at least one rack respectively mounted in each said slot, wherein the rotary table rotates around a vertical axis; a weighing scale provided at a bottom side relative to said rotary table module and electrically connected to one said electrical connector of said rotary table module and controllable by said control unit to measure the weight of an object placed thereon; at least one receptacle respectively movably mounted in said at least one rack, each said receptacle being movable relative to the respective said rack through one said slot and positionable on said weighing scale for weight measurement; and at least one liquid dispensing module provided above said rotary table module and electrically connected to one respective said electrical connector of said rotary table module for dispensing a dye solution into each said receptacle for enabling each said receptacle with the dispensed dye solution to be measured by said weighing scale, characterized in that said liquid dispensing module comprises a wheel controllable to rotate by said control unit, said wheel comprising a wheel body, a wheel axle supporting said wheel body, and multiple transverse rows of accommodation chambers arranged around the periphery of said wheel body, wherein the wheel rotates around an horizontal axis; a plurality of metering units respectively mounted in said accommodation chambers of said wheel, each said metering unit comprising a container mounted in one said accommodation chamber and holding therein a dyeing solution, a syringe equipped with a plunger, a needle tube, and a multi-port valve and a brake unit. a control unit; a rotary table module comprising a plurality of electrical connectors, one said electrical connector being electrically connected to said control circuit for transmitting a control signal provided by said control unit, a rotary table, said rotary table comprising a tabletop having at least one slot, and at least one rack respectively mounted in each said slot, wherein the rotary table rotates around a vertical axis; a weighing scale provided at a bottom side relative to said rotary table module and electrically connected to one said electrical connector of said rotary table module and controllable by said control unit to measure the weight of an object placed thereon; at least one receptacle respectively movably mounted in said at least one rack, each said receptacle being movable relative to the respective said rack through one said slot and positionable on said weighing scale for weight measurement; and at least one liquid dispensing module provided above said rotary table module and electrically connected to one respective said electrical connector of said rotary table module for dispensing a dye solution into each said receptacle for enabling each said receptacle with the dispensed dye solution to be measured by said weighing scale, characterized in that said liquid dispensing module comprises a wheel controllable to rotate by said control unit, said wheel comprising a wheel body, a wheel axle supporting said wheel body, and multiple transverse rows of accommodation chambers arranged around the periphery of said wheel body, wherein the wheel rotates around an horizontal axis; a plurality of metering units respectively mounted in said accommodation chambers of said wheel, each said metering unit comprising a container mounted in one said accommodation chamber and holding therein a dyeing solution, a syringe equipped with a plunger, a needle tube, and a multi-port valve and a brake unit.