Hazel frogs possess high medicinal and edible value. Female hazel frogs reach sexual maturity after two years and start to develop oviduct oil. Roughly 200 female frogs yield one jin of oviduct oil, a well-known yin-nourishing medicinal material in traditional Chinese medicine. Its main components include protein, multiple amino acids, enzymes and various carotenoids. Sweet and salty with a neutral nature, it tonifies the kidney, replenishes essence, nourishes yin and moisturizes the lungs.

It is mainly used to treat physical weakness, postpartum disorders, mental fatigue, palpitations, insomnia and persistent night sweats. Rich in protein, hazel frog oviduct oil is ideal for dietary therapy. Larger hazel frogs can reach around 20 centimeters in length with hind legs stretched out, while the average size is about 15 centimeters.

As amphibians, hazel frogs spend more than five months living in mountain forests each spring, summer and autumn. The remaining six months, including spawning, hatching, breeding and hibernation, are fully spent in water. Contrary to the old saying "Clear water breeds no fish", hazel frogs favor crystal-clear rivers. They feed mainly on mosquitoes and other insects, foraging at night.