The　features　of　floatation　froth:　no　background,　the　bubbles　are　adhesive　and　the　weak　verges　between　them.　This　paper　presents　segmentation　algorithm　for　floatation　froth　based　on　watershed　and　wavelet,　at　the　same　time,　application　of　opening　and　closing　operations,　morphological　gradient　method　based　on　mathematical　morphology.　The　algorithm　solved　the　problems　of　over　segmentation　and　under　segmentation　and　reduced　the　complexity　of　the　computation.　At　last,　get　each　froth＇s　area.　Experiments　show　that　the　proposed　method　can　ensure　both　calculated　efficiency　and　segmentation　accuracy.