1) Studies on the food habit of abalone, tho only species in northern China,were carried out during 1980 to 1982 in Qingdao's shallow water.2) There ware two main feeding peaks of the abalone in a year, one appreared inlate spring to early summer and the another at late autumn, the temperature rang was8--24℃.The feeding rate of abalones decreased, when the water temperature reachedabove 26℃, or below 7℃. They stopped ingesting at the temperature below 3.0℃ inwinter.3) Abalones had the preference to different kind and the tenderness of algae. They most liked Macrocystis pyrifera,Undaria pinnatifida and Laminaria japonica,specially their tender leaves, arid unliked Sargassum pallidum, S. thunbergii and Gelidium amansii.4) The growth rate of both experimental groups, 6.6--8.5 and 9.1--11.0cm,were rather slow, the mean values of shell lengh increase in a year were 0.3cm, butweight increases were 22.4% and 21.9% respectively. Feeding on Laminaria and Ulva in two months alternatelly, the efficiency of food conversion at temperature18. 8--7. 4℃ for abalones of 6. 6--8.5cm group was found to be 9.2%, containingLaminaria 952.7gm and Ulva 799.7gm, and for 9.1--11.0cm group was 9.8%,containing Larminaria 1706. 8gm and Ulva 1299 .6gm.5) Abalones usually feed at night, sometimes, they could also take food in daywhile they are seriously hungry or present of preferable food.