Objectives : This study was carried out to evaluate anti-oxydative, anti-tumor effect for clinical application of Whakijogyungtang (WJT) Results : 1. DPPH radical scavenging activities of WJT water extracts(Exts) were in proportion as concentration of WJT.(3 ${mu}g/ml:12.6{pm}2.3$ %) 2. ABTS+ scavenging activities of WJT water Exts were more effective in high density.(3 ${mu}g/ml:4.3{pm}1.6$ %, 10 ${mu}g/ml$: $11.8{pm}2.5$ %, 30 ${mu}g/ml:45.3{pm}3.2%$ 100 ${mu}g/ml$: $62.7{pm}4.8%$) 3. Hydrogen peroxide$(H_2O_2)$ scavenging activities of WJT water Exts were effective.(3 ${mu}g/ml:4.7{pm}0.8$ %, 10 ${mu}g/ml: $8.2{pm}1.6$ %, 30 ${mu}g/ml:19.5{pm}3.2$ % 100 ${mu}g/ml$: $24.6{pm}3.8$ %) 4. Anti oxidative effects against linoleic acid were not effective. 5. The generation of $O_2;^-$ in S-180 cells were according to the concentration of WJT water Exts, specially effective over 100 ${mu}g/ml$ concentration. 6. The SOD activities in S-180 cells were in proportion as cytotoxicity against S-180 cells of WJT water Exts. 7. The GPx activities in S-180 cells were in proportion as cytotoxicity against S-180 cells of WJT water Exts(more effective on 300 ${mu}g/ml$ and 1000 ${mu}g/ml$ concentration), but the catalase activities in S-180 cells were not effective. 8. The results of activites against multi-drug-resistance(MDR) of WJT were as follows. 1) In water Exts from WJT, cytotoxicity against AML-2/D100 with vincristine($IC_{50:}39.78$ ${mu}g/ml$) was more effective than without vincristine($IC_{50:}$ 183.58 ${mu}g/ml$), Cross resistance(CR:3.85) was not effective, and anti-MDR activites(RF) was effective.(RF:3.85) 2) In hexane fraction, cytotoxicity against AML-2/D100 with vincristine ($IC_{50:}130.88$ ${mu}g/ml$) was more effective than without vincristine ($IC_{50:}293.10$ ${mu}g/ml$) and anti-MDR activites(RF) was effective.(RF:4.61) 3) In chloroform fraction, the cytotoxicity against AML-2/WT and AML-2/D100 was not effective. 4) In ethyl acetate fraction, cytotoxicity against AML-2/D100 with vincristine($IC_{50:}36.43$ ${mu}g/ml$) was more effective than without vincristine ($IC_{50:}73.07$ ${mu}g/ml$), Cross resistance(CR:0.53) was not effective, and anti-MDR activites(RF) was effective.(RF:2) 5) In butanol fraction, the cytotoxicity against AML-2/WT and AML-2/D100 was not effective. 6) In $H_2O$ fraction, the cytotoxicity against AML-2/WT and AML-2/D100 was not effective. Conclusion : These result suggest that WJT has antioxidative effects, anti-tumor effects by apoptosis of free radical$(O_2;^-)$ activity, and anti-MDR activites(especially hexane and ethyl acetate fraction).