For supercritical water oxidation of glucose in a continuous flow reactor, the relation between mixing methods of two solutions (supercritical water + O-2 glucose solution) in the reactor and the profile of oxidation products was examined experimentally. Several types of mixing section with different sizes and modes of mixing were made with a commercially available stainless tee. For each mixing Section, the profiles of gaseous products obtained from glucose oxidation were measured, These experiments revealed the following: 1) the yields of H-2 and CO were slightly influenced by the relative position of the outlets of two feeder lines and the orientation of the feeder lines relativ to gravity, 2) the volume of the mixing section had no effect on the profiles of the products.