Tree test is an emerging test and therapy in Japan over the past decades. It is both a test and a therapy. In clinical practice abroad, it is proved to be very effective. Combining the clinical practices in China, it will also be accepted and popularized. This book chiefly introduces basic ways of conducting tree test, its operation, including materials, instructions and practice, and explanation towards the test results, including space and tree, the shape of trees, lines, different parts of the tree, shades, and exterior factors. In addition, through analyzing cases, it intends to provide readers with better grasp of this method and technique.