Abstract:The laxative effect of a compound seaweed instant porridge was studied.According to the principle of medicine and food homology，seaweed instant porridge was made with all kinds of edible taro，kelp，fig，oligosaccharide，jujube，taurine and so on in a certain proportion.Mice were randomly distributed as the blank control group，the positive control group，the constipated model group，the high-dose experimental group，the middle -dose experimental group，and the low -dose experimental group.After 7 days of continuous administration，the first black stool time，the number，weight，water content of defecation within 6 hours were determined，and the intestinal propulsive rate in each group were observed.The results showed that compared with the constipated model group，the high-dose and middle-dose experimental groups had significantly increased the number，weight and water content of defecation within 6 hours （p＜0.05），and had shortened the first stool time significantly （p＜0.05）.And the high-dose，middle-dose and low-dose experimental group significantly increased the mice's intestinal propulsion rate （p＜0.01），16 %，10 % and 6 % respectively.Additionally，there was no significant difference between the high dose group and the positive control group in the first stool time and number，weight，water content of defecation within 6 hours.Our data indicated that the seaweed instant porridge could promote motility of gastrointestinal tract and embellish aperient bowel function obviously.