】研究了在多孔Ta/Ta2O+陽極微孔內表面原位化學聚合聚3，4-乙烯二氧噻吩導電聚合物薄膜的制備方法，結合有機片式固體鉭電解電容器等效串聯電阻值的變化，對聚合過程在受限空間里的高分子鏈形成機理以及在弱吸附情況下微孔內的薄膜導電性能的變化進行了分析，結果表明，在受限的空間里聚合反應生成的聚合物薄膜電導率會由于受限能的影響而降低，其影響程度相似于聚合溶液濃度的變化對聚合物薄膜電導率的影響。This article investigate method of preparation in situ chemistry polymeriztion of conductive polymer poly 3,4-ethylene dioxy thiophene thin film in micropore interior surface of sinter Ta/Ta2O5 anode. The formed mechanism of macromolecule chain in restriction space as well as electrical conductivity of film in micropore interior on weak adherence occasion have been analysed with performance change of organic piece solid tantalum electrolytic capacitor. The analytic results show that, the chain length of macromolecule which polymerizing in restriction space will be changed as a result of affect of restriction energy.