Using triarylsulfonium hexafluorophospate salts as cationic photocuring catalysts, the photocuring reaction of Tung oil modified phenolic epoxy resin (TMPE) and bisphenol-A epoxy resin (E-44) was researched. The influence of reactive condition on photocuring rate was investigated with gel percent of the system. Coating structure before and after the photocuring reaction was charactered by FT-IR spectrum.The results show that both of structure and concentration of photo-initiator can influent the photocuring rate of the reactive system, and Omnicat 550 has higher catalytic activity than Omnicat 432 and the photocuring rate is proportional to the concentration of photo-initiator. Except of phenothiazine, the other two photo-sensitizers - anthracene and BPO can promote the initiation of Omnicat 432.Different kinds of epoxy and vinyl ether diluents can make the photocuring rate variety，and the photocuring rate is increased with the concentration of epoxy group in the system．At last, the phenomenon of post-curing of this system is appeared in this system. 

A tungoil-phenol compound(TAP) and the tungoil modified phenolic epoxy resin(TMP) which were synthesized in the presence of acid catalyst, and the structure of these compounds were characterized by FTIR and GPC. FTIR analysis shows that the reaction between tungoil and phenol undermined the conjugate double bond of tungoil molecules, a new substitute product with phenol was formed. When the substitute product reacted with formaldehyde in the acid conditions and further reacted with epichlorohydrine, a tungoil modified phenolic epoxy resin(TMPE) was synthesized. The GPC analysis shows that resin is a mixture of tungoil modified epoxy resin and phenolic epoxy resin, and the molecular weight of tungoil modified phenolic epoxy resin and phenolic epoxy resin were 3 482 and 619 respectively.Solidification performance for the tungoil modified phenolic epoxy resins and E-44 epoxy resin at room temperature were investigated. The results show that when the mass ratio between tungoil modified phenolic epoxy resin and E-44 epoxy resin is at the range of 0.5 to 2.0, the higher tensile strength can be obtained.