Abstract: Atmospheric ozone plays an important role in the global climate and environment. It is one of the important research topics in the atmospheric science field. In this study, the consistency of the measurement of the total ozone column, using the Dobson and Brewer instruments during the period of 2014-2016 at Xianghe, were analyzed. The Dobson measurement data during the longer period of 1979-2016 was used to investigate the long-term variation trend in the total ozone column at the same site. The results showed that the average deviation, the average absolute deviation, the standard deviation, and the correlation coefficient between Dobson and Brewer instrument data were -0.14 DU, 8.00 DU, 36.09 DU, and 0.964, respectively. In general, the total amount of ozone observed by the two instruments agreed well. SO₂ concentration had a noticeable effect on the Dobson instrument data accuracy. The average deviations of the two sets of instrument data in the atmospheric SO₂ concentration of 0-0.2 DU, 0.2-0.4 DU, and > 0.4 DU, were 4.8 DU, 7.0 DU, and 8.0 DU, respectively. The data deviation of the two sets of instruments increased with increasing SO₂ concentration. Apparent seasonal variations in the total ozone column are presented for the past 38 years at Xianghe. Ozone concentrations were larger in spring and winter relative to summer and autumn. Variation tendencies of ozone were also seasonally dependent. Different cycles of ozone amount fluctuation were derived from the long-term Dobson data. The variation tendencies were different during four long periods. Distinct ozone recovery was found from 2000 to 2010; however, ozone depletion trends occurred during recent years.