Abstract: Poly (DMAEMA-co-TPE-a)(PDT) was synthesized by radical copolymerization of N-(2-(dimethylamino) ethyl)-methacrylamide (DMAEMA) and trace fluorescent monomer 4-acryloyl tetraphenylethylene (TPE-a).The pH-sensitive fluorescent porous fiber was then prepared via introducing cross-linking agent methylene-bis-acrylamide (Bis) and porogenic agent N, N-dimethylformamide (DMF) into the system.The products were characterized by FT-IR, ¹H-NMR, TG and SEM.The fluorescent property and pH-response performance of products were also studied.Results show that PDT owns aggregation-induced emission (AIE) effect and good pH-response performance.When the molar ratio of monomer, cross-linking agent and porogenic agent is 60:1:40, the obtained fiber showed a satisfing heat-resistant quality and pH-response performance.