The traditional Chinese medicine directional drug penetration instrument has multiple functions such as medium-frequency drug introduction, bionic massage, electrotherapy, and thermotherapy. Its main working principle is to use medium-frequency current to excite peripheral nerves, dilate blood vessels, stimulate muscle tissue, so as to achieve the effects of analgesia, improving local blood circulation, promoting inflammation dissipation, softening scars, loosening adhesions, and exciting neuromuscular tissue. The drug introduction uses the DC electric field formed by the half-wave modulated medium-frequency current to make drug ions be directionally introduced into the human lesion site through the skin, so as to achieve the purpose of treating diseases.