The traditional approach in China to treating historic Qing period painted architectural decoration has been to renew and restore the paintings rather than to conserve. Though this practice is changing, with conservation now a more considered option, there is still little research and testing into suitable methods and materials to conserve these paintings. At Shuxiang temple, Chengde, an imperial temple complex built in the Qing Dynasty, a team of conservators, scientists and craftsmen are working together to develop new approaches to the conservation of architectural paintings. Investigation into materials and techniques of the paintings and their conditions was first undertaken to better inform the treatment design. This was followed by treatment testing as a significant component of the overall project. The resulting treatment approach, which incorporates traditional materials with modern conservation techniques, will be used in the design and planning for the conservation of the painted decoration at Shuxiang temple.