Epidoxorubicin belongs to the class of antibiotic antitumor drugs.As an isomer of doxorubicin, the mechanism of action is directly embedded between DNA nucleobase pairs, interfering with the transcription process, preventing the formation of mRNA, thus inhibiting the synthesis of DNA and RNA.In addition, the table of adriamycin on topology isomerase has inhibitory effect.It is a cell cycle nonspecific drug that is effective against a variety of transplanted tumors.Compared with doxorubicin, the efficacy is equal or slightly higher, but the cardiac toxicity is less.