Based on the long-term water temperature data from groundwater monitoring network of China, we produced three distribution maps with spatial scope of mainland China. The first one is the water temperature in springs. The second one is the well water temperature in the depth range of 50-149m. The third one is the well water temperature in the depth range of 150-250m. Besides, we conducted statistical analysis on the numbers of stations which have long-term trend water temperature changes, for both of the manually and automatically observation systems. The main results are as follows. Springs are mainly distributed near the active faults. Hot springs (temperature higher than 24℃) are distributed in the regions where strong earthquakes had happened. The spatial distribution of well water temperature has relationship with regional climates, based on the phenomena that well water temperatures in the north are colder than the south and temperature differences are not big in small regions. After comparing well water temperatures at 50-149m with those at 150-250m, we found that temperature rises when depth increases. About 10% manually recorded water temperatures have long-term trend changes, which means that these changes are the reflection of the real water temperature changes. For the long-term trend water temperature changes in automatic observation system, some are the reflections of the real water temperature change, but some are caused by the zero drift of thermometer.