［Objective］ To obtain fireproof coatings with high bonding strength and low expansion.［Method］This study selected epoxy resin with excellent bonding properties as the matrixand glass powder as the flame-blocking inorganic filler. A glass powder/epoxy resin fireproof coatingwas successfully prepared by optimizing its composition. The influence of glass powder content on themicrostructure，thermal conductivity and bonding properties was investigated，and the fireproofperformance was tested and the fireproofing mechanism was investigated through the alcohol blowtorch experiment.［Results］The results indicated that the glass powder was diffusely dispersed within thecontinuous network structure of the epoxy resin. The bonding strength of the coating to stainless steelgradually decreased with increasing glass powder content，yet remained above 10 MPa overall. Fireproofcoatings with a glass content exceeding 50vol% exhibited good fire resistacne and low expansioncharacteristics. A continuous white glass layer formed on the flame-exposed surface，while the temperature on the unexposed side remained stable below 180 ℃ . Furthermore，the sample showed insignificant expansion during the fire test.［Conclusion］ The prepared glass powder/epoxy resinfireproof coatings show promising application potential in fields requiring high bonding strength and lowexpansion，such as new energy vehicle components and power battery systems.