Abstract: In order to get uniform dyeing effect of cellulosic spunlaced nonwoven, the quantitative investigation of thickener, foamer, foam stabilizer, penetrating agent and other components on the foaming ratio and the half-life were made. The results indicated that better compatibility foam system and a more satisfactory foam dyeing products can be achieved with the amount of thickener as 7.2~8.4g / L, the ratio of the foamerⅠ and Ⅱ as 1.0~1.2:1, foam stabilizer as 0.6~1.0g/L and penetrating agent as 7.3~8.3 mL/L.