Abstract: Aiming at the problems of low filling concentration，difficult tailings thickening，serious sand bin hardening and old existing filling equipment in the filling system of Weishanhu Rare Earth Mine in Shandong Province，a complete and efficient intelligent upgrading scheme of paste-like filling system is proposed by means of field investigation，system analysis and mechanical design. The intelligent transfor‐ mation of tailings thickening，material addition and slurry preparation in the filling process is carried out. The intelligent control structure，filling process parameter regulation and intelligent filling control process of the system are introduced in detail. After the completion of the transformation，the industrial test of paste-like filling was carried out. The results showed that the production index of the filling system of Weis‐ hanhu Rare Earth Mine was good after the transformation. The underflow concentration of the sand silo was 64%~66%，the slurry concentration was 68%~72%，the addition range of cementitious materials was 1∶16~1∶4. At the same time，the labor intensity of workers was significantly reduced，the labor cost was saved，and the effect of intelligent upgrading transformation of filling system was remarkable. It has impor‐ tant reference significance for the intelligent filling transformation of similar mines.

Key words: intelligent transformation, paste-like filling, rare earth mine