This article summarizes Professor SHAN Zhaowei's clinical experience in treating chronic atrophic gastritis based on the "three-unblocking method". It is believed that spleen and stomach

qi

deficiency，

qi

stagnation and blood stasis is the core pathogenesis of chronic atrophic gastritis， with the key lying in the dysfunction of spleen and stomach transportation and descending. Therefore， the "three-unblocking method" was proposed， namely promoting the flow of

yang

and and removing turbidity to restore spleen transportation， unblocking the bowels to resolve stagnation and benefit

qi

movement， unblocking the meridians to resolve stasis and eliminate masses. In clinic， it is often combined with microscopic syndrome differentiation via gastroscopy. For those with spleen deficiency and damp obstruction， or

yang

qi

failing to transport， the treatment should unblock

yang

to transform turbidity； for those with food retention and bowel obstruction， or stagnant

qi

movement， the treatment should unblock bowels to resolve stagnation； for those with blood stasis and meridian obstruction， or internal masses retention， the treatment should unblock the collaterals and dissolve stasis. The prescription can choose self-formulated

Ershen Sancao Decoction

（二参三草汤） and combine modification， showing good clinical effectiveness.