This paper summarizes Professor ZHAI Shuangqing's clinical experience in using metal and mineral medicines to treat mental disorders. Based on

xiang

thinking， the

symptoms of mental disorders are classified into five categories， depression-

xiang

， wind-

xiang

， fire-

xiang

， phlegm-

xiang

， and deficiency-

xiang

， and the mechanisms of disease development are discussed accordingly. Metal and mineral medicines are key treatments for mental disorders， not only having the function of calming the mind but also promoting

qi

， stabilizing wind， expelling evil， and tonifying. In clinical practice， the emphasis is placed on harmonizing the disease and its symptoms. Based on self-developed prescription formulas， the appropriate metal and mineral medicines are selected according to the properties， flavors， meridian tropism， and actions of the medicines， as well as the

xiang

patterns of the mental disorder. For example， Attention Deficit Hyperactivity Disorder （ADHD） is treated by Modified

Xiehuang Powder

（泻黄散） with

Sijunzi Decoction

（四君子汤） and adding Fulonggan （

Testudinis Carapax

） and Longgu （

Os Draconis

）. Persistent insomnia is treated by combining a self-developed insomnia formula with Longgu （

Os Draconis

）， Hupo （

Succinum

）， and Cishi （

Magnetitum

）. Obsessive-compulsive disorder （OCD） is treated by combining a self-developed OCD formula with Longchi （

Dens Draconis

）， Qingmengshi （

Fluoritum

）， and Zheshi （

Haematitum

）. Epilepsy is treated by combining an anti-epilepsy decoction with Qingmengshi （

Fluoritum

）， Longchi （

Dens Draconis

）， and Shengtieluo （

Ferrum Rudis

）.