Teinopalpus aureus was listed as a protected species in the IUCN Red List of Threatened Species since 1985, and a Chinese first-class protected species since 1989. It is concerned increasingly by people throughout the world. However, we now still unknown its field status, habitat adaptabilities etc.. In this study, we selected four sites in Dayaoshan, Guangxi Province, China, to count adult and early stages (egg, larva and pupa) by the method of route survey, and to record its mating, ovipositing and feeding behaviors by the method of on-site tracking observation. Results showed that T. aureus grew in wet season (from April to October, with > 50mm/month in precipitation). This butterfly showed active selectivity to temperature, which larvae fed actively during 17℃ to 24℃, and males hilltoped actively during 19℃ to 26℃, while females preferred to oviposit at noon when temperature was relatively high, during 27℃ to 30℃. Males showed topographically choice behavior, and (87.34±7.58)% of males (n=339) preferred to fly up hilltops (not hillsides) in surveys. They aggregated there during 6:00am to 11:00am, flying or perching, and spent (77.87±19.32)% of time in the latter. Moreover, males always perched on those leaves located high branches or the edges of hilltop, where they "waiting" for females to obtain mating opportunity and showed the type of "perching" in mating strategy. Males showed territoriality while perching on hilltops, and often, who firstly perched in a domain would be the last winner in male-male competition over territorial ownership. This study also showed that T. aureus had a high mortality in field, and the rate of pupa emergence was only 38.9% (n=20). As for the survivals, a complicated defense system was observed, including the primary defense system (protective or cryptic color, color or shape mimicry etc.) and the second defense system (ocular-spot demonstrating, body swaying, yellow Y-gland stretching etc.). Moreover, the fully matured larva preferred to pupate under a cluster of leave in bushes or bamboo graves in the under-story of forest, and the height of pupation site was (1.82±1.58)m (n=20). Our results suggest that T. aureus evolve some specific behaviors to adapt the specific habitat of broad-leaves forest under the pressure of nature selectivity. However, habitat destructions (e.g. felling) or interference (e.g. the under-story's reclamation) might make more individuals of T. aureus fail to live, and then threat the endangered butterfly's population, or even lead to the extinction of local population.