The tomb of Princess Yong Tai, one of the 17 satellite tombs of Qianling Mausoleum, lies three kilometers southeast of Qianling Mausoleum.

The name for Princess Yong Tai was Li Xianhui. In 701AD, she died in Luoyang, Henan Province at the age of 17. The historical records say that she was beaten to death because she talked about the scandalous affairs between Wu Zetai and her kept men Zhang Yizhi and Zhang Changzong. After rising to the throne, Emperor Zhong Zong posthumously conferred the title of Princess Yong Tai upon his daughter. And in 705AD, he ordered the remains of his daughter and her husband to be buried together to the southeast of Qianling Mausoleum.

The path to Princess Yong Tai's tomb is lined with a pair of stone lions, two Pairs of stone figures, and a pair of obelisks. The excavation of the tomb was carried out between 1960 and 1962. It is the largest of the Tang tombs excavated since 1949. The tomb is pyramid-shaped, 87.5 meters long and 3.9 meters wide. The burial chamber is 16.7 meters deep. The tomb consists of a main passage, five doorways, six skylights, a corridor, eight small niches, an antechamber and a burial chamber. The whole tomb represents the house where she lived before her death. The wall on both sides of the tomb passage are covered with murals of the gods of direction, the Blue Dragon and the White Tiger, and warriors in uniforms, with gilded swords in their belts. In the eight small niches on both sides of the skylights there are a multitude of tri-colored glazed pottery figurines, pottery and porcelain wares, and some other burial objects.

Although once robbed, the Tomb of Princess Yong Tai still held more than 1,000 valuable cultural artifacts. These treasures were murals, pottery and wooden figurines, tri-colored glazed pottery figurines, gold vessels, jade articles, and copper wares. The tri-colored glazed pottery figurines, which are beautifully shaped and have peculiar decorative design in many bright colors, demonstrate the high artistic level of the Tang ceramic industry. In side the tomb, the walls are covered with rich and varied murals. The tomb passage, the doorways, the paved path leading to the tomb, the two chambers and their ceilings, are all decorated with murals. The antechamber represents the drawing room. The murals in this chamber mainly depict elegantly dressed ladies in waiting. With different articles in their hands, they carry themselves with grace and wear different expressions from one another. Some seem to be speaking in whisper, some nodding approvingly and other looking around. They look as if they are on the way to serve Princess Yong Tai. On the ceiling of the burial chamber there are painted firmaments and celestial bodies. In the east, there is a bird with three legs, symbolizing the sun. In the west there is a jade hare representing the moon. In between runs the Milky Way, dotted with stars, each of which has its set position in the celestial body. This mural greatly reflects the highly developed astronomy at that time.

In the rear chamber lay the outer stone coffin of Princess Yong Tai and her husband. In the middle of the coffin was carved with exquisite pictures on both sides. The inner wooden coffin has completely rotten away due to its saturation in silt over a long period of time.