Abstract: A two-color injection mold with a half-slider structure is designed for a two-color cup with a handle. The mold is mounted in an injection molding machine with a turntable plate. Hot runner technology is adopted in the mold to remove the condensed material and realize the production automation. The cooling system is built with conventional cooling channels in the cavities and a conformal cooling channel in the core. The simulation results shown that the cooling configuration can effectively improve the cooling effect and improve the cooling efficiency. The insert and core with a conformal cooling channel can be obtained with a foundation support machined and the top part forming via a 3D printing technology of metal powder selective laser sintering. The parting of the sliders is driven by compression springs and T buckles. The two-color injection mold is reasonable in structure and reliable in operation.