Abstract: The mining of complex and difficult orebody is a scientific and technological problem to be solved urgently in mining industry.In view of the prominent problems of low production efficiency，poor safety，high labor productivity and low resource recovery rate caused by the existing mining technology for the orebody with complex occurrence，the technical idea of zoning synergetic mining of the orebody with complex occurrence was put forward by combining the idea of engineering geological zoning with the concept of "synergetic mining".In view of the problem that there is no mature mining technology to ensure the safe and efficient mining of the U-shaped complex multi-layer thin orebody in the northwest mining area of Daxin Manganese Deposit，according to the technical idea of zoning synergetic mining of the orebody with complex occurrence，the geological occurrence conditions of orebody were comprehensively analyzed，and the strike and dip angle that affect the mining of orebody were selected as the basis of orebody zoning in combination with the 3D model of orebody，the orebody was divided into three zones，and a zoning technology of orebody guided by engineering geological conditions was proposed.According to the mining technical conditions in different zones，the mining method optimization or design was carried out in each zone，it is recommended that the shallow-hole shrinkage mining，the room and pillar method which uses electric scrapers to remove ore and the inclined room and pillar mining method that electic scrapers synergy with blast power to remove ore wee used in zone 1，zone 2 and zone 3 respectively，forming a mining method optimization and design technology for the orebody with complex occurrence.The results show that the proposed method can effectively solve the mining technical problem of the orebody with complex occurrence in the northwest mining area of Daxin Manganese Deposit，and provide a new idea for the efficient and synergistic mining of the orebody with complex occurrence.

Key words: Zoning synergetic mining, Orebody with complex occurrence, Synergetic mining, Manganese ore