The issue of the global climate change as well as the climate change in China is of increasingly great concern for various governments, scientific and technological communities and public. Among them, the climate change evidence, mechanism and attribution, climate change impact, as well as climate change prediction and projection have been studied intensively in China. The present paper will concisely review and assess contributions and achievement made by Chinese scientists from the international perspective, which include the following six aspects: (1) the characters tics of regional surface air temperature and tropospheric temperature in China have shown significant increasing trends. The warming rate of the surface temperature is about 1.2℃ per hundred year with its uncertainty ranging of 0.9-1.52℃. (2) The researches of water cycle have indicated that regional precipitation change has had no obvious trend at a hundred-year scale. However, the precipitation pattern has changed since 1970s with more precipitation in western China, whereas in eastern China the pattern of drought in North and flood in South has been observed. The annual surface humidity has taken on increasing trend. Both the small pan evaporation and potential evaporation have appeared decreasing trends. The annual runoff of most rivers in eastern China has shown decreasing trends, while that in western China has shown increasing trends. (3) It is indicated that the anthropogenic forcing has produced significant effect on the long-term variation of the East Asian monsoon. The intensity of the East Asian summer monsoon will become stronger and the monsoonal rain belt will migrate northward. (4) The sea level has been affected by the global warming. Since 1980, the rising rate of sea level in China is about 2.9 mm/a, being higher than that of the global mean. (5) The attribution of the climate change has suggested that the surface temperature variation for the last 100 years is the result of the superimposition between the global warming and the natural Pacific Decadal Oscillation (PDO) or other oceanic phenomena. The fast warming rate and the intensity as well as the frequency of some extreme events (such as heat waves) in china are consistent with the global counterparts, mainly influenced by the increase of the green-house gases. (6) The model projections have stated that by the end of 21st century, the global surface temperature will possibly increase by 1.0-3.7℃. The increasing amplitude of surface temperature in China will be 1.3-5.0℃. The precipitation will increase by 5%-14% and the extreme events will more frequently occur. Finally, the suggestion of scientific problems concerning the climate change in China that need to be furthter studied in the future is put forward: (1) global and regional observation analysis, especially the modes of the sea and the atmospheric circulation as well as their multi-scale variability; (2) interaction between cloud and climate, climate sensitivity and feedback; (3) evolution of paleoclimate and its comparison with the modern climate change as well as its attribution; (4) global and regional water cycle, carbon and nitrogen cycle and their impacts; (5) polar sea ice, ice cover and cryosphere as well as sea level rise; (6) global monsoon system and drought flood disaster; (7) the threshold of the extreme events and climate abrupt change; (8) improving weather-climate integration model and multi-role earth system model.