This paper summarizes 15 key research areas on laser materials processing and 7 key research areas on laser micro-nano fabrication based on the statistic information from 6 ICALEO-International Congress on Applications of Lasers and Electro-Optics and 3 CNCLMP-China National Conference on Laser Materials Processing. Five hot research topics on laser materials processing and four hot topics on laser micro-nano fabrication have been concluded from the distribution of 1247 ICALEO papers and 231 CNCLMP papers in the key research areas. The research on laser materials processing in China has covered the main and leading research areas in the world. There show strong research interests and large number of papers in laser surface modification especially in laser cladding in China. More efforts and research work are needed to strengthen the research in novel laser development and laser micro-nano processing.