The invention belongs to the field of
pharmacy and discloses a
protein nanometer particle for wrapping slightly soluble medicines and a preparation method thereof. The formula of the particle comprises, by weight, 0.1% to 10% of slightly soluble medicines, 0.1% to 40% of soluble
carrier material and 50% to 90% of
protein material. The preparation method comprises the steps of first making the slightly soluble medicines and the soluble
carrier material into a soluble carrier
solid dispersoid containing the slightly soluble medicines; then adding the obtained
solid dispersoid into an
aqueous medium containing the
protein material, mixing evenly, performing high shearing condition
processing to mixture, and obtaining suspension of the protein
nanometer particle containing the slightly soluble medicines; and further preparing a required
dosage form. The protein
nanometer particle has the advantages of being high in
medicine loading quantity, even in grain
diameter, good in stability, high in safety and the like. The preparation method avoids residue of toxic organic solvents, improves safety of clinical
medicine usage, and is easy in process, low in cost and strong in
operability.