The effects of amination time and temperature, the compositions of amination medium on membrane stability and ion-exchange capacity (IEC) are reported in this paper. It is revealed that the membrane's IEC increases with the amination time and attains to a plateau value after some time which is dependent on the temperature, e.g. 56 h at 10 degreesC, and 4 h at 45 degreesC. To consider both the dimensional stability and the amination rate, it is recommended that the amination be conducted at 35 degreesC for 10 h in most cases. Addition of some ethylenediamine (EDA) to the amination medium is favorable to the membrane stability due to the formation of crosslinkina structure in the membrane bone but it will cause a slight decrease in IEC. From both the IEC and the stability points of view, the content of saturated EDA should be controlled within 10% of the whole amination agent. To compare with the previous paper [1], the effect of base membranes on IEC and stability is also investigated. It is shown that the membrane dimensional stability can be improved by aryl substitutions without the change of the membrane IEC. Therefore, there are some alternative ways to increase the membrane stability or mechanical strength, e.g. by an increase in the content of EDA (crosslinking agent) or aryl bromine content, a decrease in amination time and temperature and the content of trimethyl amine, etc. By properly balancing them, a series of anion exchange membranes can be obtained to meet different industrial requirements, such as in diffusional dialysis, electrodialysis and water splitting processes.