Modified method of PAE wet strength agent with poly(vinyl-alcohol) with epoxy group, discussed the dosage of modifier, the amount of modified resin on paper to enhance the performance. The results show that PVA can conduct chemical and phyical modification recation of PAE wet strength agent, while chemical modification recation is the best process. What is more, PVA can be epoxided using chemical modification by means of Fourier transform infrared spectroscopy(FT-IR), the molecular weight of modified PAE resin is 13508 by GPC. The scanning electron microscopy(SEM) photographs show that binding force of paper fibers are enhanced significantly by modified PAE resin. The desired conditions for a better strength of paper are as follows: the mass fraction of modifier is 16%, the dosage of modified PAE resin is 1%. Compared with traditional modified PAE wet strength agent can further improve the paper dry tensile index by 23.42%, wet tensile index by 77.78% , folding resistance degree increases by 201.10%, tearing index increases by 22.85%, the burst index increases by 288.70%.