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Taking the domestic intelligent barometer as the research object, the domestic DYG4 and foreign PTB series barometer sensors were selected as the experimental samples to study the laboratory calibration method of the domestic intelligent barometer; The instruments and equipment, calibration items and data processing principles were analyzed in the calibration method, and an automatic calibration system for DYG4 was designed based on the research of the method; In the calibration case, the indication error, return error and repeatability of the measurement results of the sample instrument were tested, and the uncertainty of the indication error measurement results was evaluated. The uncertainty of DYG4 at each pressure point is 0.14 HPA and that of PTB series is 0.12 HPA; The laboratory comparison results show that the absolute value of normalized deviation of each pressure point does not exceed 1, which proves that the calibration method is reasonable.