RESUMO
From theYellow Emperorand other representative Chinese classics of the Tang and its previous dynasties we assorted the contents of extracting solvent, boiling time, boiling heat and special frying methods. By studying these contents, we found that immersion can reduce side effects and improve efficacy;boiling solvents include water, vinegar and so on;6-8 times the amount of water than the drug is preferred, boiling times is usually once;special frying methods include decoction first, decoction later, decocted medicine water used in place of water as solvent, infused decoction, etc. Decoctions were generally not allowed to stand overnight. TCM decocting methods had great impacts on its effectiveness. It can provide more medication ideas for doctors and provide boiling guidance to patients.