Coal vitrinite reflectance ellipsoid fitting is applied to 15 oriented tectonically deformed coal samples from 4 coal mines of Huaibei area based on compatibility adjustment. The influence of stress, temperature and deformation texture on the orientation and shape of ellipsoid is discussed, combining with the tectonic evolution of research area after coal formation and the coal deformation texture. The results show that, dips of the max—intermediate reflectance plane of most of the samples are similar to the source of the regional stress direction, which may be attributed to the coal aromatic plane is prefer to grow along the direction perpendicular to the resultant stress direction of horizontal tectonic stress and overburden stress; Few samples exhibit abnormal indication may due to the influences of the nearby fault striking perpendicular to the compress stress, coal deformation extent or multiphase stress field; Affected by the multiphase stress, the indication turn to the resultant stress direction of later stress field. While the process will be stopped by strong deformation, the shift and rotation of particles of coal with strong deformation weaken the turning and make the indication remains the resultant stress direction of former stress field; Magma thermal abnormality is one of the main reason leading to the max—intermediate reflectance plane dips steeply; According to Flinn parameters, most of the samples exhibit flat ellipsoid, only three samples exhibit long ellipsoid, which reflect the normal coal evolution and the influence of magma thermal respectively.