The giant salamander is the largest and most valuable amphibian in the world. Its cry is very similar to the cry of a baby, so people call it doll fish. The giant salamander is a national second-class protected amphibian wild animal, and it is a species of the key development of agricultural industrialization and characteristic agriculture and the protection of wild animal genes. Except for Tibet, Inner Mongolia, and Taiwan, which have not been reported, the Chinese giant salamander is distributed in other provinces and regions. It is mainly produced in the mountains and streams of the Yangtze River, the Yellow River and the upper and middle tributaries of the Pearl River.

The giant salamander, the giant salamander, is the largest type of amphibian. It looks a bit like a lizard, but it is fatter and flatter. The giant salamander has a flat, blunt head, a large mouth, underdeveloped eyes, and no eyelids; the front of the body is flat, and gradually becomes laterally flattened to the tail; there are obvious skin folds on both sides of the body, the limbs are short and flat, the fingers and toes are four and five in the front , with micro webs; round tail, with fins up and down the tail; body color of salamanders can vary with different environments, but generally gray-brown; the body surface is smooth and scaleless, but has various markings and is covered with mucus , the body ventral color light.

The three largest salamanders in existence, the Chinese giant salamander can be up to 1.8 meters long, the Japanese giant salamander can be up to 1.5 meters long, and the cryptogill salamander can be up to 0.75 meters long. The common point is that the body is flat and long, the limbs are very short, the front limbs are 4 fingers, the hind limbs are 5 toes, there are webs between the toes, and there is a short and flat tail. Those who do not know or mistakenly think that fish are actually amphibians. They breathe through gills in the water, and breathe through the lungs and skin outside the water. The skin has only mucous membranes and no scales.