In order to reduce the friction coefficient of phosphate (ACP) bonded solid lubricating coating in the temperature range of 25°C-600°C, graphene oxide (GO) was synthesized in situ and added to ACP binder to prepare an effective ACP-GO composite wear-resistant coating with wide temperature range. The structure and properties of ACP-GO composites were studied by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR). The results show that the distribution of elements in the ACP-GO composite coating is relatively uniform, and the hardness and compactness of the coating increase with the increase of GO content. The graphene oxide and ACP binder are mainly connected to each other by hydrogen bonding, and GO is uniformly dispersed in ACP binder, which improves the mechanical and tribological properties of ACP-GO composite coatings. Tribological tests show that the friction and wear of the composite coating are significantly reduced over a wide temperature range after the ACP binder is added in-situ with 0.5 wt% GO in situ under a load of 5N. Further analysis shows that the tribological properties of the coating are significantly improved by hydrogen bonding between GO and the phosphate skeleton in a wide temperature range, but when the temperature exceeds 500°C, GO begins to oxidize and decompose, and the mechanical properties and friction and wear properties of the coating are not improved.