Abstract: In order to continuously gain reservoir capillary pressure curve to evaluate reservoir pore structure，aiming at the proplem that the reservoir capillary pressure data are very finite，a new method constructing capillary pressure curve by using conventional porosity and permeability is put forward and the constructing model of capillary presusre curve is set up based on 169 cores mercuryinjection data analysis.The accuracy of the，model is verified by means of the correlation with practical core mercuryinjection capillary pressure curve，it is proposed that optimal comprehensive physical property is used to continuously construct capillary pressure curve.The curve is applied in practical reservoir evaluation to obtain mean capillary radius，maximun capillary radius and reservoir water saturation，as well as to evaluate the pore structure of the reservoir，the correlation of core analysis and well logging model interpretation indicates that the result calculated with the new model is reliable.

Key words: capillary pressure curve, porosity, permeability, application, pore structure, water saturation