Abstract　 　　
　 Mass-temperature relation of galaxy clusters and groups is an important indicator for examining our understanding of the evolution and thermal history of such systems. We present a systematic analysis on the largest sample so far, which consists of more than 300 clusters and groups from the Chandra archival data. We show that the mass-temperature relation of the high- and low-mass parts of the sample can be described with power-law relations with different slopes. We also find that there is a clear trend for cooler systems to have a smaller mass fraction of X-ray emitting gas, which is evident within both r500 and r200. Both phenomena demonstrate that the effects of energy injection are more pronounced in less massive (i.e., cooler) systems.