PURPOSE: To obtain a saccharide absorption inhibitor suppressing absorption of saccharide in body, containing a phenyl glucoside compound extracted from a natural substance as an essential component.

CONSTITUTION: A phenyl glucoside compound which is obtained by dissolving unpurified sugar such as crude sugar or molasses, adsorbing the phenyl glucoside compound on an adsorbent and extracting the phenyl glucoside compound with a lower alcohol is contained as an essential component to give a saccharide absorption inhibitor. The phenyl glucoside compound is tachoside [(3-methoxy)-4- hydroxylphenyl)-β-D-glucopyranoside] and arbutin (4-hydroxyphenyl-β-D- glucopyranoside).