We know that Prof. Mao Jingwen has not studied Mo or Cu (Mo) deposit, but Mao Jingwen et al.(1999, 2005, 2008) has changed the Huanglongpu carbonatite vein type Mo (Pb) deposit (Huang Dianhao et al., 1985a, 1989, 1990) into carbonate (rock) , hydrothermal carbonate vein , or vein type. Mao Jingwen et al. also separated the Nannihu—Sandaozhuang porphyry—skarn type Mo (W) deposit genetically associated with Nannihu porphyry body into the Nannihu porphyry Mo (W) and the Sandaozhuang skarn Mo (W) deposits. Mao Jingwen et al. (2005) changed a large number of skarn type Cu (Mo) and a small number of porphyry—skarn type Cu (Mo) deposits occurred in the Middle—Lower reaches of the Yangtze river valley into a porphyry—skarn—stratabound type Cu—Au—Mo deposit and it was known as a mineralization type or a metallogenic system. Mao Jingwen et al. (2002, 2008) named the Dahu quartz vein type Au—Mo deposit as quartz vein type Au deposit or as vein type Mo deposit, respectively. It is clear that the ore deposit types defined by Mao Jingwen et al. are not based on ore forming characteristics and denomination principle of these ore deposit types. Mao Jingwen et al. (2008) reported that the Wenquan Mo deposit is porphyry type Mo deposit related to S type granite and considered that such deposit is a new type of Mo mineralization, however, this conflicts with the fact that the deposit is related to I type granite (A/CNK is 0.94~0.97), not S type granite. The available data show that Re content of molybdenites of different type Mo or Cu (Mo) deposits has larger variation, and the mean Re content in molybdenite generally decreases with the following order of ore deposit types: porphyry—skarn type Cu (Mo) deposit (843 μg/g)>porphyry type Cu(Mo) deposit(439.6 μg/g)>skarn type Cu(Mo) deposit(313 μg/g)>carbonatite vein type Mo(Pb) deposit( 287 μg/g)>skarn type Mo deposit(61.8 μg/g)>porphyry type Mo deposit(26 μg/g)≥porphyry—skarn type Mo(W or Fe) deposit(25.8 μg/g)>quartz vein type Mo or Au (Mo) deposit(9 μg/g). Re content in molybdenite may be associated with the origin of ore deposit and the source of ore forming material. It is well known that the above all of Mo or Cu (Mo) deposits genetically belong to hydrothermal deposit, and so that their ore forming materials should be included not only metallic elements, but also sulfur and hydrothermal fluids. It is clear that the idea that Re content in molybdenite may indicate the source of ore forming material proposed by Mao Jingwen et al. (1999) has not any scientific evidence. Mao Jingwen et al. later clarified that such idea was supported by Stein et al. (2001); in fact, Stein et al.(2001) suggested that the Re concentration in molybdenite can only provide clues for the origin of a deposit.Mao Jingwen (2012) considered that ore forming fluid and other materials of the Dashuigou hydrothermal Te (Au) deposit came mainly from the mantle, but the paper has not the δ34S∑S and δ13C∑C values of ore forming fluid and the geological and isotopic geochemical evidences of tellurium and gold source, as well as the ore forming fluid indicating hydrogen and oxygen isotopes is a mixing solution consisting of magmatic and metamorphic water. Therefore, Prof. Mao Jingwen’s above opinions are unbelievable.