为了对TESS 测光数据中样本较多的大振幅δ Scuti 型变星（下称HADS星）进行研究，得出其脉动模式，周期光度关系（下称周光关系）以及其内禀恒星参数对周光关系和脉动模式的影响，本论文对TESS 卫星全天数据中的AF型脉动变星进行筛选，最终得出HADS 星表；而后利用对星表中的样本星光变曲线进行频率分析，同时结合GAIA 天体测量数据与LAMOST 光谱数据计算得出的恒星参数与三维分布进行统计研究。
在以往的学术著作中，由于HADS 星的现存样本稀少，多数的工作集中在对于单星的模型计算与拟合上。作为对比，本论文在TESS 卫星第一轮巡天数据（天区1 到24）数据中证认出91 颗HADS 星，其中新证认的有24 颗。经过统计分析，得出了HADS 星存在周光关系的结论，并且HADS 星的脉动模式与金属丰度等恒星参数能够对周光关系造成影响。同时，利用GAIA 卫星EDR3 数据中的高精度视差，得出了银盘外的HADS 星在三维空间中的分布规律。

In order to study high amplitude δ Scuti stars(HADS Stars), which shows an abundance of samples in TESS data, aiming to retrieve its pulsation pattern, periodluminosity relation(PL relation) and how it is affected by its internal stellar parameter, the study filters the AF type oscillators in TESS data sector 1 to 26, eventually obtaining the catalog of HADS stars? Then conduct frequency analysis on candidate light curves, statistical analysis on candidate stars by combining the 3dimensional distributions calculated from astrometry data of GAIA and stellar parameters calculated from spectroscopy data of LAMOST.
According to previous scientific publications, due to the lack of sample HADS stars, more work is done focusing on the model calculating and fitting of singe object star. To the contrary, this study identified 91 HADS stars among which 24 stars are newly confirmed in TESS first round of survey (Sector1Sector26). Statistical analysis revealed that the existence of PL relations in HADS stars, also such relations are affected by its pulsation pattern and stellar parameters. As well, making use of astrometry data of GAIA indicates the 3dimensional distribution of HADS stars beyond the galactic disk.