We present the U‐band light curves of the FSRQ PKS 1510‐089 in 2006‐2016by performing the original ob‐servation data taken from Swift/UVOT archive .PKS 1510‐089 shows strong optical variability with timescales from days to years .By means of the date‐compensated discrete Fourier transform (DCDFT ) method ,we found the existence of the periodicities of 313 d and 557 d in the U band .%对Swift/UVOT望远镜的观测数据进行处理,得到了平谱射电类星体PKS 1510‐089从2006年到2016年的光学U波段历史光变曲线。使用时间补偿离散傅里叶变换对光变曲线中的周期成分进行分析,结果表明:PKS 1510‐089在光学U波段可能具有313天和557天的光变周期。
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