The uncertainty of calibration results for secondclass standard mercury thermometers directly influences the delivered results of temperature quantity values. According to the related standards of temperature instruments, the uncertainty of calibration results for a set of standard thermometers is evaluated by the method of JJF10591999 (Evaluation and Expression of Uncertainty in Measurement), on the basis of temperature measuring principles, calibration methods, components of the uncertainty, and the calibration data of the secondclass standard mercury thermometers in 2007. Based on the calibration results, a set of error analyzing procedures and methods are devised, which provide an example of error analysis for provincelevel metrological service.