Objective:To compare the effect of different factors ⑴ oral hygiene habits ⑵designs of dentures ⑶material of dentures on abutment teeth of removable partial dentures (RPDs).Methods: Abutment teeth healthily of examined patients status after they had worn RPDs two years with index about the caries, periodontal and oral hygiene habits . Their results were analyzed with χ2 statistics. Results:The patients oral hygiene habits and different designs of dentures are close relation with abutment teeth healthily status but different material of dentures is not significantly. Conclusion: The abutment teeth healthily status are relativei with many factors, but oral hygiene is a most important factor.