Abstract: Many geological exploration breakthrough are more closely related to the small intrusions deposits in recent years.The small intrusions deposit that is one of the major exploration research directions has received increasing attention.The author clarified the connotation of small intrusions mineralization,improved the main mechanism (the deep segregation/crystallization-penetration mechanism of mafic-ultramafic magma and the gas,liquid,mineral aggregate in the head of acidic magma mineralization mechanism) of the two types of magma of small intrusion mineralization and ten mineralization types.The author also pointed out the essential differences between the Iarge-scale intrusions mineralization and small intrusions mineralization,and the relationship between the porphyry and small intrusions mineralization,and summarized the superior characteristics (Small,Broad,Large-scale,High,Shallow/Latent) of small intrusions mineralizatian.All of the shove work on the basis of study about the small intrusions mineralization of the two types of magma (2006),The scope and geological attributes of small intrusions mineralization (2008) and The small intrusions rnineralization system (2011).In addition,we should pay more attention to the typical characteristics,prospecting direction and the important prospecting areas of small intrusions mineralization in the new round of magmatic deposits exploration work in the future.