Abstract: Northwest China is being wetter recently, and the precipitation shows different trend in the eastern and western regions. The latest daily rainfall data, which is provide by the Chinese Meteorological Administration Data Center, are used to analyze characteristics of the rainfall amount, rainfall days and rain intensity. In recent 50 years in Northwest China, the total rainfall is mainly contributed by the stronger rain, which contributes 75% rainfall in 5% rainfall days; the rainfall trend is greatly different in different regions, in eastern Northwest China, the rainfall has been in decrease trend, however, in the western region, it has been in increase trend. The rainfall in weak intensity decreases, but the intensity increases. The rainfall in stronger intensity increases, and the intensity also increases except the intensity of the extreme rain storm. For all seasons, the rainfall days play an important role in contributing the rainfall amount.