Debris disks have been described as gas-poor disks with gas-to-dust ratio is significantly lower than that of the protoplanetary disks so that gas is rarely detected in debris disks. Thanks to various sensitive telescopes, the number of debris disks with gas detection is increasing, so finding more debris disks with gas has become a key topic in debris disk research. However, large-scale search is very time-consuming and inefficient. Therefore, in order to select detection targets faster and better, it is necessary to select smaller-scale samples according to the characteristics of such sources. This paper aims to summarize the overall characteristics of these sources by analyzing the parameters of debris disks and their host stars. For this purpose, this paper collected published literature of debris disks with gas detected and found a total of 37 sources, including 12 sources of cold gases such as CO, 14 sources of hot gases such as CaII and 11 sources of coexistence of cold and hot gases. Through statistics of the spectral types, ages and distances of the host stars, as well as the fractional luminosities, gas mass and dust mass of the disks, this paper draws the conclusion: the host stars are mostly B-type and A-type stars. The stellar ages are mostly less than 50Myr. The distribution of fractional luminosities is more concentrated than the known debris disks, which is in the range of 10^-5–10^-2.