A study on diseases resistant physiology of 8 typical rice varieties from Liaojing series was carried out.The results showed that disease resistance of Liaojing series of rice varieties was higher than that of the control.The level of resistance was different in different area, which was caused by both strains of pathogen and culture methods possibly.The results suggest that varies of strains of pathogen in different areas should be considered when new varieties were popularized besides cultural methods.The varieties also should be renewed in time.