The invention discloses a bi-component addition type mold silicone rubber for injection molding. The silicone rubber is cured and molded by using A and B components, wherein the A component comprises the following components in parts by mass: 100 parts of base silica gel, 0.1-0.30 part of platinum complex catalyst, 0.1-2.0 part of polymerization inhibitor which is alkynol and vinyl ring-body compound, and 0-10 parts of vinyl silicone oil; the B component comprises the following components in parts by mass: 0-100 parts of vinyl silicone oil, 4-15 parts, preferably 5-10 parts of one or more hydrogen polysiloxanes, and 0-20 parts of vinyl silicone oil. The silicone rubber is used for preparing silicone rubber mold through injection molding and mainly suitable for fast injection molding, the obtained product is good in extrusion property, easy for demolding after being molded, good in mechanical property, free of volatile byproducts in the vulcanizing process, low in shrinkage percentage, internally and externally vulcanized at the same time, good in rebound resilience, wide in application, and can be applied to preparing various injection molded products such as artificial jewelry; the silicone rubber can be reused many times, the higher the reuse frequency is, the better the performance is.