Research conclusions ： The research was done on the suspension and fixing of the catenary under the upper cover platform of the Tanglang Vehicle Depot of Shenzhen metro on learning the suspension and fixing modes of the catenary in the high - speed railway tunnel. From the research，it is concluded ： (1) The crossing suspension mode should be adopted to the catenary under upper cover platform of metro vehicle depot. (2) The structure of the embedded C shaped steel (channel) should be adopted to the catenary under the upper cover platform on determination of the technical parameters and requirements of the C shaped steel embedded parts. (3) The design plans of the various embedded parts corresponding to the contacting suspension and fixing (crossing fixing cable, hoist cable and cantilever, etc) and installation of the anchor and isolation switch were determined on the research. (4) From the angle of the project management, the analysis was made for the advantages of the structure of embedded C - shaped steel mode for the catenary’s suspension and fixing. The proposal was made that this mode would be widely used in the catenary engineering.