Planting reeds is an important way to protect and recover lake wetland. Birds diversity is a good indicator to evaluate the recovery efficiency of the wetland ecological function. To examine the planting reeds affected the birds diversity, we set two sample lines(1.5 km and 1.0 km) in the planted reed wetland, and three sample lines (one 1.5 km and two 200 m)in the original reed wetland in the sample area in Suzhou Taihu lake national wetland park. A survey has conducted on bird community structures in two kinds of reedbed from June 2010 to May 2011, and the differences between them has analyzed by using ANOVA. A total of 50 bird species belonged to 11 orders, 28 families were recorded, among which 39 and 36 species were found in the planted reed wetland and in the original reed wetland respectively, and 25 species were recorded in both habitats. Resident birds such as Vinous-throated Parrotbill (Paradoxornis webbianus), Common Moorhen(Gallinula chloropus), Light-vented Bulbul(Pycnonotus sinensis)and Plain Prinia (Prinia inornata) were dominant species in the two kinds of wetland. In general, the change trend of bird species and density was consistent, with the lowest value in January(11 species)and February(25.86 birds each hectare), reached maximum in May (30 species) and June (73.64 birds each hectare). The bird community biodiversity of planted reed wetland was higher in spring (H′=3.411 5) and summer (H′=3.050 1), while the evenness index of planted reed wetland was lower in spring (J=0.993 5), summer (J=1.035 9) and autumn (J=0.831 5). Throughout the year, the diversity and evenness index of planted reed wetland (H′=3.274 7, J=0.893 9) were lower than that of original reed wetland(H′=3.300 2, J=0.920 9). No significant difference was observed between the two reed wetlands, indicating that the planted reed wetland restoration was close to original reed wetland.