In order to realize the comprehensive utilization of gasified ash and reduce the cost of putty powder production，the technical feasibility of using gasified ash to replace the cement to prepare putty powder was experimentally studied. The gasified ash and 42. 5 cement were used as the main raw materials，and a small amount of hydroxypropyl methylcellulose and dispersible latex powder were used to prepare the gasified ash-based putty powder. The effects of changes in the formulation of the raw materials on the performance of the putty powder were experimentally investigated. The research results showed that it was feasible to use gasified ash to replace cement products to prepare putty powder. Among them，when the gasified ash replaces 50% cement，the bond strength of the putty powder reached up to 0. 82 MPa，and all properties were better than the requirements of JG /T 157—2009 standard for putty powder of building exterior walls. Under the same conditions，when the gasified ash replaces no more than 70% of the cement，the bond strength and other indicators of the putty powder met therequirements of the putty powder standard JG /T 157—2009 for building exterior walls.