The embodiment of the invention relates to a production process for a silver ion antibacterial knitted fabric. The production process comprises the following steps that S1, preparation of spun silk card sliver; S2, drawing; S3, roving; S4, preparation of spun silk chinlon filament composite yarn through a Sirofil spinning technology; S5, preparation of the knitted fabric; S6, washing; S7, pretreatment; S8, dyeing; S9, color fixing; and S10, washing and drying. During dyeing, a softening agent and a silver ion antibacterial agent are added, and therefore the fabric can achieve excellent antibacterial performance and can keep the antibacterial performance for a long time. According to the production process for the silver ion antibacterial knitted fabric, the spun silk chinlon filament composite yarn is prepared through the Sirofil spinning technology, the knitted fabric is prepared from the composite yarn and spandex yarn, a proper dyeing and color fixing process is selected, a proper anti-bacterial finishing process is added, and therefore the prepared knitted fabric has excellent color fastness and antibacterial performance, and the fabric can serve as skin-fit clothes.