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Hydrogen in the lower explosion limit concentration in the air, the electrochemical sensor susceptible to electromagnetic interference caused by explosion in hydrogen gas detection, safety coefficient is low. Was designed and implemented a hydrogen flow detection based on acoustic resonance frequency drive system design method, through testing the different concentrations of hydrogen through the sensor after the sensor resonance frequency changes caused by changes in the concentrations of the reaction of hydrogen system based on S3C2410 module design, design of the peripheral signal conditioning circuit, chip for the Linux system transplantation, security and accuracy are greatly improved. Finally simulation experiment, the experiment tools include sensors and probes, chip of hardware circuit, USB data acquisition card; Models are respectively 1%, 2.54%, 1%, 4.1% of the national standard tested hydrogen, models of 0.513% carbon monoxide, models for 100% of the carbon and oxygen. The experimental results show that the system can be in 10 s of concentration of hydrogen flow monitoring alarm, and error is less than 0.015 under the different cross gas system of hydrogen flow detection accuracy is as high as 98%, have very strong practicability.