Abstract: The factors influencing the stability of anion emulsions such as the ratios and contents of anion emulsification have been investigated.The factors affecting the stability of the no-ionic emulsions,such as the value of HLB(Hydrophile Lipophile Balance) and the contents of emulsification,have also been covered.It is found that the emulsification ratios and the value of HLB dramatically affect the stability of emulsified oil and emulsion.By researching the effects of different stabilities and different concentrations of emulsion on the absorption and friction coefficient,it is established that good lubricating performances can be obtained when the stability of emulsion is in the certain level.It has also been found in the experiment of cold rolling process that the proper stability and appropriate concentrations should be introduced based on the demands of the cold rolling process,so that the process works normally.