经典的休哈特控制图对质量特征值的均值波动检出力较弱。采用单值－移动极差控制图控制空调充氟量在短期内往往很难发现充氟量偏差值的漂移，导致充氟量偏差调整不及时。本文采用累积和控制图（ＣＵＳＵＭ）来控制充氟量偏差的变化，改进了充氟偏差调整方式，在保证质量的同时降低了生产成本。 The classic Shewhart control chart has weaker detection of the mean value fluctuation of the quality eigenvalues. It is often difficult to detect the drift of the fluorine content deviation in the short term by controlling the fluorine content of the air conditioner using the single value-moving range difference control chart, resulting in the adjustment of the fluorine content deviation is not timely. In this paper, the cumulative sum control chart (CUSUM) is used to control the variation of the amount of fluoride filling, and the fluorine-filled deviation adjustment method is improved, which reduces the production cost while ensuring the quality.