(%)

leading balance of CD4 and CD8For assessing clinical therapeutic effect of Du Su Qing on seline bacterial pneumonia （accumulation of phlegm and heat in the lung

deficiency of both Qi and Yin）

senile patients of pneumonia on the basis of routine treatment of Western medicines were randomly divided into treatment group （treated with Du Su Qing Oral Liquid） and control group （treated routinely with Western medicines）

and the healthy old people were used as healthy senile group. Changes of IgA

IgG

IgM

C3

C4

and CD3

CD4

CD8 and their ratio in the peripheral blood before and after treatment were investigated. Results indicated that of 33 cases in the treatment group

10 cases were cured

16 markdely effective

5 improved

the effective rate being 93. 93%; of 31 cases in the control group

corresponding fingers were 5

6

15

and 83. 87%

with a significant difference between the two groups in therapeutic effect. The levels of IgA

IgG

C3 and CD8 （%） in the senile patients of pneumonia were significantly higher than those in the healthy senile group

and after treatment they

except C4

in the treatment group were improved

which were superior to those in the control group. It is suggested that combination of Du Su Qing with routine treatment of Western medicines has a significant therapeutic effect and the mechanisms may be: （1） decreasing the increased IgA

IgG

IgM and C3 levels; （2） increasing the decreased CD3 （%） and CD4 （%）

decreasing the increased CD8