Foam dyeing and finishing is a novel approach for textile processing, which can save energy and reduce the quantity of waster water. Frother plays an important role in foam dyeing and finishing systems. In this paper, the foaming properties of SDS were investigated for the purpose of application of foaming systems in fabric dyeing and finishing. The influence of SDS on foam properties was studied by measuring foamability, foam stability, equilibrium and dynamic surface tension, surface viscosity bubble size and bubble uniformity. At the same time, the relationship between foam apparent performance and microcosmic mechanism was also analyzed. The research will benefits the future study on the application of foam technique to the field of textile.