The white-bellied giant rat is generally about 20cm-30cm; the white-bellied giant rat is a larger rodent in the murine family. The snout and around the eye sockets are dark brown, the ear shells are large and thin, dark brown, and can be pulled forward to cover the eyes. There is a dark brown patch in the central area of the dorsum of the forefoot.

The white-bellied giant mouse is mostly active at night, and starts to go out after dusk , a wide range of activities. The white-bellied giant rat is good at climbing, and often climbs on fruit trees and steals the fruit. In winter, they mostly spend the winter in mountain caves, and in late spring and early summer, they often spend the winter in the countryside in the mountains. The white-bellied giant rat mainly eats green parts such as stems and leaves of plants. The white-bellied giant rat also feeds on fresh fruits and a small amount of insects in summer, and generally eats various wild fruits in mountainous areas, such as chestnuts, masson pine, and fir fruits in winter.