In this study, the desalination rate, foaming capacity andfoam stability, emulsifying properties and emulsion stability,and gel strength of the salted duck egg white protein weredetermined after different pretreatments and ultrafiltrationdesalination. The application of ultrasound and microwavepretreatments significantly (p ≤ 0.05) improved the desalina-tion rate and the impact of ultrasound was greater than thatof microwave. The foaming capacity, emulsifying propertiesand emulsion stability, gel strength of the desalted duck eggwhite protein was better when the ultrasound intensity andpower was increased in the present studied range.