The metamorphic buried hill reservoir that bearing hydrocarbons develops in JZ25-1 oilfield，in which the main reservoir space is fracture in the study area. The porosity is an important standard for fracture reservoir evaluation，so the key factors of reservoir exploration and development are effective predictions on fracture development zone and porosity.Metamorphic rock reservoir in JZ25-1 oilfield was predicted using pre-stack elastic wave impedance inversion by integrating previous research results and making a comprehensive analysis of well logging and seismic data. The recognition criteria of fracture reservoir in the study area were determined through establishing the relationship between S-wave impedance and fracture reservoir porosity，and then the characteristics of fracture reservoir distribution were analyzed. Research results show that weathering crust，fracture zone，tight zone and two sets of reservoirs develop in the buried hill formation in the study area. The upper reservoir develops on the top of the weathering crust，and the lower reservoir develops in the fracture zone which is the main fracture reservoirs in the study area. The fracture reservoir spreads along the NE faults，and mainly distributes at structural highs of the buried-hill horizontally，while in the profile，it is characterized by poor reflection continuity and nearly layered formation. The better fractured reservoir develops mainly in the middle and the south of the study area. Regional structural highs in the southern part with porosity larger than 6.5% and parts near the fracture development zone should be favorable areas for the next oil and gas exploration.