Objective To explore the feasibility of visual evaluation of curative effects of Chinese medicine in Yin-deficiency and dampness-heat syndrome in dampness-retention disease. Methods Symptom value standards for Yin-deficiency and dampness-heat syndrome in dampness-retention disease were established

and the standard value data was collected from 30 patients. Patients were intervened using decoctions treating Yin-deficiency and dampnessheat syndrome for 2 weeks. Based on Central Limit Theorem for probability distribution

symptom value matrix was established. According to symptom value matrix before and after the treatment

by conversion of eigenvalue and eigenvector

center and radius of ellipsoid were figured out. The ellipsoid was drawn

and the visual presentation of transformation of associated symptom value was achieved. Results Spatial shape of the ellipsoid generated by the symptom value of 30 patients before and after treatment changed in two ways: the center point（ mean value） moved towards the direction of the original point

and the volume of the ellipsoid was also shrinking with its dispersion diminishing

tending to concentrating towards the center. These features manifested that decoctions for Yin-deficiency and dampness-heat syndrome could improve clinical symptoms remarkably. Conclusion Visual evaluation on curative effects of Chinese medicine in syndrome based on symptom value matrix is a direct

precise

and feasible way.