Abstract: Based on the data of about 80 common ligneous plants in Nanjing, the florescence variation of plants was analyzed. The results showed that: ① The florescence of Winter jasmine,Flos mume and Japanese apricot appeared earlier which could be found on 1^st March, while the blooming date of Chimonanthus praecox was the last which always occured on 20^th December. Osmanthus fragrans and Koelreuteria paniculata were found blooming on 28^th September and 27^th August, respectively, Sambucus willamsii Hance, and Hydrangea macrophylla had the longest flowering phase which was more than 30 days; ② there was a forward tendency(-5 d/10 a)of the initial and late blossom time during last 30 years. Particularly, the blooming time of Tilia miqueliana Maxim was 8 d/10 a in advance, and the increasing trend had been more obvious since the year of 2 000. This study might make a contribution to study researching the evolution rule of ligneous plants in Nanjing, as well as to provide data for forecasting florescence when people are choosing tree species in urban landscaping.