The invention relates to the technical field of watchband molding, in particular to a forming process of a double-color watch belt. The forming process of the double-color watch belt comprises the following steps that 1, materials are prepared; 2, a forming mold is prepared; 3, primary material placing is carried out; 4, primary oil pressure forming is carried out; 5, a middle plate is taken out;6, burrs are torn off; 7, secondary material placing is carried out; 8, secondary oil pressure forming is carried out; and 9, mold opening is carried out. According to the forming process of the double-color watch belt, the primary oil pressure forming is completed through a lower mold and the middle plate by the aid of the forming mold, then the middle plate is taken out, and then the secondary oil pressure forming is carried out through the lower mold and the upper mold to prepare the double-color watch belt, so that the pursuit of consumers on the appearance of a product is met, and the forming process has the advantages of being simple in process and low in production cost; and in addition, high-temperature solid silica gel is adopted for the materials of the two colors so that the cross color between the two colors caused by over-good material fluidity can be avoided, the bonding between the two colors is strong, and the layering cannot be generated in a using process.