The present invention provides a method for producing a glass cloth which is suitable as a reinforcing material for making resin laminates and which comprises subjecting filaments of glass fibers to a sizing treatment with a sizing agent containing at least one water-soluble film forming agent selected from the group consisting of an amine-modified epoxy resin, an ethylene oxide-added epoxy resin and ethylene oxide-added bisphenol A as film forming component, forming glass yarns from the thus treated filaments, weaving the glass yarns to make a glass cloth, washing the glass cloth with water until the loss of ignition of the sizing agent to the glass cloth reaches 0.25% by weight or less, and then treating this glass cloth with a solution of a surface treating agent.