The invention discloses a method for producing a golden ceramic cellphone shell with polysilazane. The method includes: internally mixing polysilazane, zirconia, cerium oxide, titanium hydride and titanium oxide in vacuum to obtain colloid, forming a ceramic cellphone shell blank with the colloid, thermally treating the blank in a mixed atmosphere environment, and sintering to obtain the ceramic cellphone shell. Multiple thermal treatments are performed herein under the action of the mixture of H2 and N2 and the mixture of H2, N2 and CO such that titanium oxide and titanium hydride main phase generate TiN phase and Si3N4 phase in situ, ceramic is toughened and enhanced multiply through the generated TiN and Si3N4 phases, and the produced ceramic has uniform microscopic structure, excellent comprehensive mechanical properties, low cost, light weight and bright golden color, and can better meet the demand of golden cellphone shells in cellphone development.