Tangka is a rare part of Tibetan drawing art. The technique of mounting and restoration of Tangka is of unique procedure and style that are different from the mainland tradition. It is of vital importance to introduce new technology to the traditional mounting and restoration methods. On the basis of practicing restoration of the two Tangka - Pakpa and the Medicine Buddha, the article elaborates on the specific skill of mounting and restoration of Tangka. Some methods of mounting and restoration are as follows: taking a picture of the original Tangkas for later comparison, cleaning the back of the center part of painting, patching up the damaged hole and pasting up supplementary materials, and backing up the whole painting with a supplementary material, wiping out the edges, etc. In addition to these methods, the traditional Thangka mounting processes should be taken, such as the restoration of protuberance, deformation, selvage of sootiness, the complementarity of broken parts, and the reinforcement the core of Thangka and so on, rather than the copy of the color-patching method of Chinese painting restoration. It is thus possible to make a fundamental summary of the technology of mounting and restoring a Thangka painting through the use of all possible techniques.