The Hainan Creek Tree Frog (scientific name: Buergeria oxycephala) is a species of amphibian belonging to the Tree Frog family and the Creek Tree Frog genus, endemic to China. The body is flat and narrow in length, with a pointed snout end and distinct snout edges. The nostrils are slightly closer to the snout end, and the distance between the upper eye face and the eyes is equal. The eardrum is obvious, the plow bone teeth are slender, and the tongue is large. The lateral metatarsal fins are well-developed; The inner metatarsal process is small and there is no outer metatarsal process. The skin on the back is smooth or has small warts; The temporal folds are obvious. The abdomen is covered with flat warts, and the throat is relatively smooth. In strong sunlight, the back of the lower body appears gray, and in dark and humid environments, the color darkens, with some appearing dark brown or brownish red.