Oral bioadhesive particulate system for drug delivery can delay the drug staying on epthical cell and improve the bioavailability of drug by using bioadhesive polymers.

• 口服生物黏附微粒释药系统是通过黏附聚合物的使用,使各种药物存留在上皮细胞膜上的时间延长从而提高生物利用度。