The restoration of traditional clothing not only involves the shape, structure, pattern and fabric display of the clothing itself, but also includes the display of the real human body wearing state. At present, in the restoration of clothing relics unearthed from tombs, the size data of the tomb owner is involved. Due to the lack of relevant data records, it is difficult to obtain a more accurate size of the tomb owner. Therefore, in costume restoration, the real display of clothing relics has become a thorny issue. With LI Yinggu's coffin in the tomb of Prince Yixuan ZHU Yiyin and his wife in Nancheng County, Jiangxi Province as an example, briefing derivation was conducted in combination with the data provided by the unearthed relics. By looking for related to cultural relics, the linear relation between the body parts are studied to obtain reasonable deduction for tomb owner data. The corresponding value between each part of the human body is calculated, and then the value range of the human body data is calculated, and the average value of the human body data is obtained. Finally, the body data of the virtual model is adjusted to get a more real human body model. On this basis, the CLO3D software is used to restore the clothing, which can present a more real and appropriate clothing wearing effect. It provides new ideas for digital research of traditional clothing.