The invention discloses an insole and a processing technology. The insole comprises an insole body, a half sole support, a foot arch support, a heel support and an anti-skid covered edge. The pad body is composed of a lower bamboo charcoal fiber breathable cloth layer, a palm rest memory foam layer, an arch rest memory foam layer, a heel rest memory foam layer, a lower waterproof breathable film, a lower breathable foam layer, an upper waterproof breathable film, an upper breathable foam layer and an upper bamboo charcoal fiber breathable cloth layer, and one side of the top of the lower bamboo charcoal fiber breathable cloth layer is connected with the arch rest memory foam layer; various materials are compounded into a whole, the supporting effect is good, wearing is comfortable, the pain risk of the half sole, the foot arch and the heel is reduced, the body health of a user is guaranteed, the antibacterial function is achieved, the breathability is good, foot sweat is easy to diffuse, bacterium breeding is restrained, the problem of foot odor caused by long-time wearing is avoided, the user experience is good, and the practicability is high. And meanwhile, a freezing shot blasting trimming mode is adopted, so that the working efficiency is high, personal errors are avoided, residual burrs are few, the trimming precision is high, and the production quality is good.