Two alkylol amine emulsifiers were synthesized through the reaction of polyisobutylene succinic anhydride with triethanolamine and ethanolamine, respectively. They were then used for the preparation of emulsion bases and tested in terms of microstructure, viscosity and storage stability. Their compatibility with emulsion explosive and the detonation velocity of modified emulsion explosive were inspected for their practical applications. The results show that both of alkylol amine emulsifiers have good emulsifying capacity and the emulsion explosives made from them have longer storage period in comparison with T152 and Span80. For this two emulsifiers, polyisobutylene succinic anhydridetriethanolamine emulsifier had better emulsifying ability.