Abstract: For particle accelerators, ground deformation can cause beam distortion or even loss, thus it is necessary to study ground deformation in particle accelerator field. After constructing two parallelly distributed hydrostatic leveling systems consisting of 7 static leveling sensors spaced 10 m apart in the Hefei Light Source’s linear accelerator tunnel successively, we analyzed a total of three periods’ monitoring data collected by the two systems for a period length of half a month. We found the linear relationship in the ATL model and obtained the constant values of the ATL model separately, and discover the correlation between the model constant and seasons’ temperature. Finally, through data comparison, it was found that the periodic components in the relative motion of ground points were mainly affected by the Earth tide.