Most of lamprophyres in Laiyuan and Fuping are alkali lamprophyres. They mainly consist of camptonite, alkaliminette, alkali-kersantite, alkali-vogesite and transition types of them .The main mafic minerals in alkali lamprophyres are kaersutite, biotite, Ti-bearing diopside as well as a few altered olivine, and the felsic minerals are mainly plagioclase and alkali-feldspar. The calc-alkali lamprophyres are mainly consisted of non-titanium mafic minerals (such as hornblende, diopside) and two kinds of feldspar. The two series of lamprophyres can be distinguished by the following major marks; the alkali lamprophyres have SiO2<46% or F≥5% or TiO2﹤1.5%，and in contrast, calc- alkali lamprohyres have SiO2≥46% or F﹤5% or TiO2﹤1.5%.The lamprohyre magma in this area may have been less or not contaminated with the crustal rocks. The calcite in alkali lamprophyres may be the primary minerals.