Cement clinker and admixture fine crushing system

The invention relates to a cement clinker and admixture fine crushing system which comprises a first stock bin and a first vibrating screen which are connected with each other, and a second stock bin, a constant feeder, a high-pressure roller mill and a cement batching warehouse which are sequentially connected with each other, an oversize material discharging port of the first vibrating screen is connected with a feeding port of the second stock bin, an undersize material discharging port of the first vibrating screen is connected with a feeding port of the cement batching warehouse, and the cement batching warehouse is used for being connected with a cement grinding system. The fine crushing system is additionally arranged in front of the cement grinding system of an old production line, the granularity of materials entering the cement grinding system can be effectively reduced, the effects of improving the productivity and reducing the energy consumption are achieved, high-configuration cement grinding equ