Suaeda salsa were taken as raw materials and the ultrasonic-assisted extraction technology was used to extract red pigment from Suaeda salsa.The single factor and orthogonal experiments were adopted to study the effects of such factors as ultrasonic power,liquid-solid ratio,time and temperature on extraction of red pigment.The optimal technological condition of red pigment extraction from suaeda salsa by ultrasonic was determined.The order of factors that influence the extraction of red pigments was as follows;liquid-solid ratio>extraction temperature>ultrasonic power>extraction time.The optimal extraction parameters were as follows;extraction time 50min,extraction temperature 50℃,liquid-solid ratio 15 mL/g,ultrasonic power 800W.In addition,ultrasonic improved the pigment extraction in this experiment.