Abstract: The northern Guangdong is the most important large concentration uranium area with granite,in the summary of the characteristics of general mineralogy 、mineral combination、occurrence and causes,and in the research of ulrichile with detecting in north of Guangdong,it found that ulrichile often symbiotic with the deputy minerals of magnetite、ilmenite、pyrite、monazite、apatite、Xenotime and so on.The contents of urichile is higher in the graite of ilmenite-monazite; The ulrichile growth in intergranular、fissures and the edge of mineral.The deeply research of relation,which between the urichile of form、content、causes and geological conditions,all that will provide help for search ulrichile.