1. Temperature: The optimum temperature for frog growth is 20 ~ 30℃. When the temperature drops below 10℃, its feeding and activity gradually weaken, and when it drops below 5℃, it begins to hibernate. When the water temperature exceeds 32℃, its activity is obviously weakened, and when it exceeds 35℃, frogs will die one after another.

2. Humidity: Frog skin has no organizational structure to protect water evaporation in the body. It is obviously not enough to maintain the humidity of the body surface only by mucus secreted by skin glands. Therefore, the habitat environment should have both a pond with water and a warm and humid environment with overgrown weeds.

3. Lighting: Frogs don't sleep during the day and come out at night. They are afraid of direct sunlight, but weaken the light. Light can promote the metabolism, growth and reproduction of frogs. For example, living in the dark for a long time, the gonads are difficult to develop and mature, and even stop laying eggs and discharging sperm.

4. Water quality: frog tadpoles are required to have high dissolved oxygen in frog pond water, which generally meets fishery water quality standards. Although adult frogs and young frogs breathe with their lungs, the high dissolved oxygen in water still has a good effect on them. The suitable PH value is 7 ~ 8, and the general salinity is not higher than 2.