Adult frogs are faithful to their breeding pond, so genetic differences among different geographical populations exist (Yang et al. 1994). Breeding season for mountainous frogs occurs from October to March, and is usually initiated by rainfall (Yang and Lin 1988). Breeding season for lower elevation frogs is usually shorter, from December to February (Yang and Lin 1988).
Males call from nests consisting of muddy depressions which they dig themselves, under piles of rice straw, or grasses along banks by still water. Males may wrestle each other in territorial combat. Females prefer large-sized males with a low mating call, and have been reported to mate with up to four males (Kuramoto 1986; Yang and Lin 1988; Liang and Wang 1978).
The advertisement call is pulsed and consists of 1-2 notes, low and monotonous, but in a chorus the call is 3-4 notes "Ge-Ge-Ge", sometimes followed by a series of "coughs". If a female approaches the courtship call is up to ten notes. Each note has a duration of 1.6s. Calls have a fundamental frequency of 1.7 kHz as well as two weak harmonics at 3.5 kHz and 5.3 kHz (Kuramoto 1986).
Clutches are oviposited in the muddy depressions (nests) from which the males call (Kuramoto 1986). During mating, females create egg foams by mixing mucus and semen with their hind legs. The egg foam covers the clutch of 300-400 white eggs and keeps the eggs humid. Tadpoles take one to two weeks to hatch from eggs. After the tadpoles hatch, the nest serves as a small pond, providing the tadpoles with nutrients for about 40 days. The rainy season then washes the tadpoles into lakes (Yang and Lin 1988).