Abstract: Analyzing the working principle of continuous annealing simulator for cold rolled strip and physical characteristics of hydrogen, a safety control strategy of hydrogen utilization was proposed including the controls of hermetical performance of furnace, gas content in furnace, alarm of hydrogen detection in plant, safety interlocking and emergency measures. A continuous annealing simulator of cold rolled strip has therefore been developed successfully and used in good condition in a steel plant without faults though hydrogen was utilized so frequently. The fact showed that the safety control strategy proposed ensures the safe utilization of hydrogen.