We examined the clinical usefulness of Hachimi-jio-gan and other Kampo drugs for the senile patient suffering from gonarthrosis. Kampo drugs were administered referring not only to “Sho”but also roentgenograph of the knee joint. Hachimi-jio-gan was effective for the senile patients with gonarthrosis, while application of the “Seinetu-Risuizai”, drugs which clear away heat-evil and promote diuresis, were required in cases accompanied by excessive pathogenic dampness-heat combination, swelling and deformity of the Knee joint. Kampo drugs for senile patients are extremely useful because they have few side effects and provide high quality healing.