Guided by the theory of spleen-stomach ascending and descending， it is believed that the core pathogenesis of childhood simple obesity lies in the disorder of spleen-stomach ascending and descending， which leads to dysregulation of lipid metabolism. This pathogenesis is also closely associated with other pathological factors， such as deficiency， dampness， phlegm， heat， and blood stasis. Based on this， the basic therapeutic principles of regulating ascending and descending functions and resolving turbidity and lipids are proposed. In clinical practice， childhood simple obesity is divided into three stages for syndrome differentiation and treatment. For overweight stage， it is often attributed to spleen def

iciency with failure to ascend clear

qi

and liver wood overacting on earth， so the treatment focuses on strengthening the spleen， soothing the liver， dispelling dampness， and resolving turbidity， with modified

Xiaoyao Powder

（逍遥散） combined with

Erchen Decoction

（二陈汤） as the recommended formula. For obesity stage， it is commonly caused by failure to transportation due to spleen deficiency， hyperactive stomach failing to descend， and phlegm-heat congestion， then the therapeutic strategy involves clearing stomach heat， descending turbidity， eliminating phlegm， and unblocking

fu

organs， while also regulating the spleen， with self-formulated

Qingshen Xiaozhi Decoction

（轻身消脂饮）. For severe obesity stage， it is typically linked to spleen deficiency affecting the kidney and interming-ling of phlegm and blood stasis， and the treatment emphasizes warming and tonifying the spleen and kidney， resolving phlegm， and dissipating blood stasis， using modified

Fuzi Lizhong Pill

（附子理中丸） combined with

Guizhi Fuling Pill

（桂枝茯苓丸）.