The invention relates to a cold noodle used for treating children with spleen-stomach syndrome and a preparation method thereof. Prepared from the following raw materials, all in parts by weight: Astragalus 4, Bupleurum 5-7, Scrophulariaceae 5, Ophiopogon japonicus 4, Motherwort 3, Grape 15, Eupatorium 3, Barley powder 10, Tomato 10, Green tea powder 15, Sweet potato starch 35, alum 0.5‑1, lily 8‑12, gorgon 3‑5, iron-clad gold 3, iron broom 4, cotyledons 4‑7, murina 3, coriander 2, brookweed 1. The Liangpi used for treating children with spleen and stomach diseases of the present invention uses Chinese herbal medicine as the main raw material, has a unique composition and reasonable compatibility, and has the functions of invigorating the middle and replenishing Qi, promoting blood circulation and removing blood stasis, invigorating the spleen and nourishing the body, nourishing blood and promoting body fluid, regulating qi and removing stasis, etc. , used to treat symptoms such as children's loss of appetite, poor diet, spontaneous sweating and night sweats, sallow complexion and emaciation. The course of treatment is short, the curative effect is obvious, and there is no side effect.