Tropical bird represents a different strategy in life history evolution compare to temperate bird, studies of tropical bird, however, was quilt shortage. Red-whiskered Bulbul (Pycnonotus jocosus) is a common species in northern tropical region which offer a good opportunity to study. In spring and summer of 2010-2014, the breeding ecology of Red-whiskered Bulbul was studied in Guangxi. Nests located by following nesting-related activities of the birds or systematically search potential nest site, ANVON and Principal component analysis were used to analysis the relative data in SPSS 17.0. Result suggest that the peak of egg-laying of Red-whiskered Bulbul is from the middle of April to the end of May and It prefers to build nests in shrub or artificial plant Sterculia nobilis(Fig 1d). Clutch size was 3 ~ 4 with an average of 3.31(n=31), egg mass 2.59 ± 0.29 g, length 21.10 ± 1.73 mm, breadth 15.35 ± 1.50 mm. Breeding success was 36.16% (Table 3), with the main loss caused by predation, nest desertion and human disturbance. The relatively higher clutch size of the bulbul was attributed to the single brood per year and lower breeding success. The main factors affecting the nest site selection were safety, desiccation and shrub(Table 1 and Table 2)