The microstructure and morphology of precipitates in a hot-rolled steel plate produced in industry were analyzed using Optical Microscope(OM), Scanning Electron Microscope(SEM), Transmission Electron Microscope(TEM), and Energy Spectrum Analysis. The types and mass fractions of precipitates in the steel after simulated enamel firing treatment at 800 ?, 850 ?, and 900 ? were compared. Combined with the results of Hydrogen Permeation Experiments, the relationship between the content of precipitates and the hydrogen storage performance of the steel plate was analyzed, as well as the influence of different enamel firing temperatures on the mechanical and hydrogen storage properties of the steel plate. The results indicate that a large amount of Ti4C2S2, TiC, and Ti (C, N) precipitates are distributed on the ferrite matrix of the steel; As the temperature of the enamel firing heat treatment increases, the size of TiC or Ti (C, N) precipitates in the enamel fired steel gradually increases, while the quantity gradually decreases; After annealing at 850 ?, the total mass fraction of precipitated phases reached its maximum, while after annealing at 900 ?, the total mass fraction of precipitated phases slightly decreased; The hydrogen permeation sensitivity value TH of steel reaches its maximum after annealing at 850 ?, while it significantly decreases after annealing at 900 ?; The yield strength and tensile strength of steel gradually decrease with the increase of enamel firing temperature, but can still reach a yield strength level of over 400MPa after high-temperature enamel firing at 900 ?.