The invention discloses a preparation method of a composition used for a rubber product, and a product thereof. The method comprises steps that: under normal temperature, reclaimed rubber particles are mechanically crushed into reclaimed rubber
powder with mixed sizes or graded sizes of no more then 90 meshes and no less than 200 meshes, or the reclaimed rubber
powder with powdery auxiliary materials, or a watery material thereof, and / or a material composed of the rubber
powder mixed with a softener; the material obtained in the previous step is mixed with a rubber
emulsion or a rubber solution or a coagulated wet rubber phase which is not dried; the mixture is processed through a liquid removing treatment, such that a
solid rubber powder-rubber composite product is obtained; or the mixture is not processed through the liquid removing treatment, such that a rubber powder-rubber composite product containing water or liquid is obtained. Compared to a
processing technology in current rubber industries wherein rubber powder is masticated into high-elasticity rubber balls, the method provided by the invention is substantially energy saving. Compared to a wet rubber
drying process in the current rubber industries, the method provided by the invention has greatly improved efficiency. With the provided composite product, upstream, middle
stream and downstream of a rubber industrial link can be tightly combined, and benefits such as energy saving,
discharge reducing, and efficiency enhancing can be provided.