There are plenty of critical minerals deposits associated with alkaline and alkaline- carbonatite complexes in Brazil, such as the biggest niobium mine (Araxá)of the world, the world- only zircon deposit produced from nepheline syenite, and the biggest uranium and nickel deposit of Brazil. Economic geology related to alkaline and alkaline- carbonatite complexes are not only metallogeny interesting of critical metals, but are also economically important and strategic value. The main Critical Minerals deposits associated with alkaline and alkaline- carbonatite complexes could be divide into 4 metallogenic Series according the 35 representatives from the literature:①U- Zr- Mo- REE and fluorite matallogenic series related to agpaitic alkaline complexes;②Nb- P- Ti- REE and vermiculite matallogenic series associations alkaline- carbonatitic complexes;③Ni matallogenic series related to the Alaska- typemafic- ultramafic complexes;④U- P matallogenic series associations metasomatic “episyenites” and albitites.According to thetemporal spatial distribution, The Critical Minerals in Brazil also could be divided into 5 regional metallogenic belt: (Ⅰ) Lancinha- Cubato REE- P- U- Zr- Ni- Mo and vermiculite metallogenic belt; (Ⅱ) Rio de Janeiro- Rondnia Nb- REE- Ti- Zr- P and diamond and 5ore- concentrated area; (Ⅲ) Ceará- Mato Grossodo Sul Ni- U- P and vermiculiteMineralization zones; (Ⅳ) The Nb- REE- Th- Ti- Pmetallogenic belt in Amazon; (Ⅴ) The uranium ore- concentrated area of Bahia. This manuscripts also gives detail information of the typical critical ore deposit in Brazil, It would be helpful to find more strategic and critical Minerals resources in this area in the future.