Adverse reactions related to tumor treatment in elderly patients （such as nausea， vomiting， constipation， and rashes） are major obstacles to the normal progression of anti-tumor treatment， significantly affecting the quality of life and survival benefits of elderly patients. Based on the theory of "seeking treatment from the

Fu

organs for old age" in

Huangdi Neijing

， and integrating the pathological characteristics of "

Zang

organ deficiency and

Fu

organ excess" in the elderly （where

Zang

organ deficiency results from natural aging and is difficult to correct fundamentally in the short term， while

Fu

organ excess is due to stagnation and obstruction of

Fu

qi

， which can be promptly addressed）， this article proposes a treatment approach from the perspective of the

Fu

organ to manage tumor treatment-related adverse reactions in elderly patients. In terms of pathogenesis， it is suggested that toxins remain in the stomach， making it difficult to lower turbid

yin

， resulting in nausea and vomiting. Toxins stagnate in the intestines， causing poor transit and leading to constipation. T

oxins stagnate in the sweat pore， leading to the failure of opening and closing， which causes rashes. Regarding treatment， the dredging method is advocated. For nausea and vomiting caused by toxins in the stomach， the goal should be to dredge and lower the stomach qi， with a combination of descending and ascending methods. For constipation caused by toxin stagnation in the intestines， the approach should focus on dredging the intestines， expelling turbidity， and balancing attack and defense. For rashes caused by toxin stagnation in the sweat pore， ventilating lung， dredging sweat pore， and restoring the balance of opening and closing. In this way，

qi

in the

Fu

organs can freely flow， drug toxicity can be relieved. The therapy can enable the continuation of effective anti-tumor treatment.