Abstract:Pain is a common body reaction in human daily life. According to the duration of pain, it can be divided into acute pain and chronic pain. Acute pain is often a defensive response to certain acute injuries, and the occurrence of chronic pain is multifactorial, and the specific mechanism is unclear. The persistence of pain suggests that biological genetic mechanisms may be a key factor in causing chronic pain. Recent studies suggest that GTP cyclohydrogenase 1 (GCH1) gene and tetrahydrobiopterin (BH4) play an important role in the pathogenesis of pain and are important for elucidating the genetic mechanisms of pain and potential therapeutic strategies.