Some attempts were made to find suitable conditions for extracting the fucose-containing polysaccharide from the fried fronds of the brown alga Kjellmaniella crassifolia. The yield of the polysaccharide extracted increased with increasing extraction temperature up to 100°C. At 100°C the yield was enhanced with prolonged extraction time up to 3h when the yield was 515 mg/10g dried frond. The yield did not increase any more beyond 3h. The yield was hardly affected by pH changes at 90 or 100°C. The extract from the frond also contained alginic acid and protein. Precipitation of the contaminating alginic acid and protein with calcium acetate and trichloroacetic acid respectively resulted in a remarkable loss of fucose-containing polysaccharide.