The invention discloses a medicinal brassiere for preventing mammary gland proliferation and relative producing method. The intermediate layer of brassiere contains drugs, especially containing high polymer aquagel which can be released intelligently. When dressing said brassiere, and the temperature reaches 37Deg. C, the drug layer can release soup quickly to be absorbed through skin to release the purpose of preventing and treating illness. Said functional brassiere can apply the preventing and health protection of high risk group, while it has auxiliary treatment or treatment functions to light and severe mammary gland proliferation, to bring the preventing and treatment of illness into normal life health protection.