There exists a strong basis for shale gas development in the Lower Cambrian Series Lujiaping Formation of the northern Daba Mountains where drilling has shown potential shale gas resources with strong heterogeneity. In view of the differential enrichment of shale gas in the Lujiaping Formation, the metamorphic characteristics in the Lujiaping Formation and their influence on shale reservoir space structure are analyzed in- depth based on geological survey, drilling, experimental testing and other data.They reveal that regional dynamic heat flow metamorphism has occurred in the northern margin of the Daba Mountains under the influence of strong tectonic activity. Regional differential tectonics has determined the difference in the degree of shale metamorphism in the Lujiaping Formation and only very low- level metamorphism has occurred in some areas. In the range (about 0. 3~1. 5 km away from the intrusive zone) affected by magmatic intrusion where the metamorphism degree is relatively high, regional dynamic heat flow metamorphism has resulted in mixed petrolization of different degrees.The physical properties of the Lujiaping Formation in the northern margin of the Daba Mountains are characterized by low porosity and low permeability. Regional dynamic thermal flow metamorphism has led to the obvious deterioration of physical properties and pore structure of the Lujiaping Formation.Dynamic metamorphism has not significantly affected the reservoir performance of the Lujiaping Formation, but the areas with high degree of dynamic metamorphism are often characterized by strong structural compression deformation, developed faults, fractured strata, and the shale gas preservation conditions in these areas have been severely damaged. Therefore, it is necessary to search for structurally stable areas with low degree of local dynamic metamorphism for the shale gas exploration in the Lujiaping Formation at the northern margin of Daba Mountains.