Abstract: In order to develop modern coal chemical technology of methanol to petroleum and chemical products,the industrial application of methanol to olefin( MTO) and methanol to propylene( MTP) technology were described.Economical efficiency of partially industrialized device were analyzed.So far,16 sets have been put into commercial operation.The MTO technology was becoming more and more sophisticated. When the oil price ranged from 40 to 50 dollors per barrel,the MTO technology was still economical,and the MTO technology need moderate development.In order to avoid projects repeated construction of the same kind which might lead to homogeneous competitions,the MTO technology need to be updated continuously.On the one hand,the new generation technology of MTO and MTP need further expand to elevate the project economical efficiency,on the other hand,new methanol to olefins technologies aimed for propylene and C_4 olefins were also developed to increase the product diversity.