Abstract: The foaming and foam stabilizing properties of temperature-and salt-resistant amphoteric surfactants were studied. Through the foaming experiment， the temperature and salt resistant foaming agent (TTB， XXB) and foam stabilizer (AEO) were selected， and then the compound system of the three foaming agents and foam stabilizer was studied， and the formula with large foaming volume and good stability was obtained. Finally， the effects of temperature， NaCl and CaCl2 on foam properties were studied by foam stability experiments. At each experimental temperature (20℃， 60℃， 80℃， 90℃)， the foaming volume of TTB， XXB and AEO series nonionic surfactants decreased to a certain extent， and the foam stability increased significantly with the increase of the concentration of EO (oxyethylene chain number) series surfactant. In addition， with the increase of EO (oxyethylene chain number)， the foaming volume increases and the stability decreases. With the increase of temperature， the foam volume increases and the stability decreases gradually. With the increase of the concentration of Na+ and Ca2+， the foam volume gradually decreased and the stability increased， but the effect of Ca2+ was more obvious than that of Na+.

Key words: surfactant, heat and salt resistance, compound system, froth