The invention relates to a composition with bowel relaxing and sleep improving functions. The composition is prepared from, by weight, 15-28% of isomaltooligosacharide, 4-15% of fructo-oligosaccharide, 1-10% of xylooligosaccharide, 20-35% of aloe extract and 20-35% of radix et caulis acanthopanacis senticosi extract. The unexpected effect is achieved by compounding compound oligosaccharide, aloe extract and radix et caulis acanthopanacis senticosi extract, the obvious promoting effect is achieved for the bowel relaxing effect by adding aloe extract and radix et caulis acanthopanacis senticosi extract, the sleeping quality and the sleeping time are improved by regulating intestinal function, insomnia caused by heat accumulation constipation can be treated, insomnia caused by various other causes can be improved, and therefore the dual functions of treating constipation and insomnia are achieved, the effect of getting twofold results with half the effort is achieved, and the composition has the advantages of being safe, effective, free of toxic and side effects, convenient to carry and convenient to take.