The recent industrial production and application of hydrocarbon solvent at home and abroad were described, and the suggestion of developing in China was provided.

It is therefore suggested that traditional aromatic solvents be substituted with essential oils,and the environment-friendly emulsifiable concentrates were then prepared.

The equilibrium temperatures of inclusion in Pingbei area are characterized by double peak, which means at least two session of hydrocarbon filling occurred in the reservoir of Pinghu Formation.