The IPCC fifth assessment report (AR5) showed that the global temperature tended to increase in future. Meanwhile, the range of warming in China is higher than that of the global average temperature. It is very significant that understanding the impact of climate change on central heating in China which can provide decision-making advice to supply heating, save energy and reduce air pollution during the supplying heating period. This paper firstly defined the climate index of central heating according to National Central Heating Design Specification, then analyzed the impact of climate warming on climate index of central heating in China based on daily grid meteorological data with high space resolution. The result showed that: 1) The beginning day of central heating tended to delay during the past 55 years in China. The decadal shift of the characteristic line for beginning day from south to north changed very little. 2) The final day of central heating tended to shift to an earlier date. The characteristic line of final day moved obviously from south to north in the east of 110oE which was 200-300 km higher than that in 1960s since 2000.3) The length of supplying heating period tended to shorten. The length decreased by 10-15 d in the Northeast and North China and that decreased by 15-20 d in Northwest China. 4) The intensity of suppling heating tended to reduce obviously. The intensity decreased by 12%, 20% and 15% for Northeast, North and Northwest China respectively. The intensity was related to winter average temperature closely. According to the variation of winter temperature from 1991 to 2015, the temperature difference (TD) between the coldest and the warmest winter could reach 6.2℃ in Northeast China which accounted for 28.9% impact on intensity of supplying heating; the TD was 3.7℃ and 3.3℃ for North and Northwest China respectively, which accounted for 26.8% and 17.6% impact on the intensity respectively. Climate warming has a significant impact on the climate index of central heating in China. The relative departments should arrange the supplying heating schedule according to weather variation, meanwhile, pay attention to the occurrence of extreme cold events under the background of climate warming to ensure the central heating operate safely.