The invention provides an elastomer-material fine-breaking combination device that can add accessory materials before or after fine-breaking and can feed stably; the device comprises a feed device arranged before or / and after a fine-breaking machine group unit, a fine-breaking machine group unit which is divided into two groups of a group A and a group B, or three groups of a group A, a group B, and a group C is provided. The invention in particular relates to one feed device or the combination of more than one feed device: a, a machine which can add accessory materials is provided additionally; b, a fine-breaking machine subgroup unit is provided additionally; c, a feed flow-ratio adjusting device is additionally arranged on a feed path; d, a material return machine which can combine the coarse powder material which is classified or is screened out by a screening machine, and the fine powder material, and then can supply the combined material to the fine-breaking group A or fine-breaking group B or fine-breaking group C to make breaking again is additionally provided; e, a more perfect machine is additionally arranged behind the combination device; f, an automatic control electric apparatus is arranged on the combination device; the various adding and arranging adopt the integral combination of general machinery or / and non-standard machinery and electric apparatus in the market.