Forty cases of chronic renal failure （CRF） receiving hemodialysis were treated by drugs for strengthening- spleen tonifying - kidney （SSTK） and observation on frequency of infection and changes in IL - 2 and T- lymphocy subgroup were made with the following results: for the treatment group

the frequency of infection per patient during the 6 - month period of treatment was 1. 7

that of the control group

4. 6

the difference being significant （P<0. 01）. After 6 months of therapy

the IL - 2. T3

T4

T4/T8 were markedly increased as compared with that before treatment and with markedly significant difference as compared with the control group （P<0. 01

P<0. 05）

indicating the SSTK yields the actions of strengthening the immunity and decreasing the incidence of infection in such patient.