Core-shelf type carboxylated particles form a flocculated structure in aqueous suspension with neutralization of carboxyl groups. Rheological behaviors of the suspension have been studied at various temperatures, and microstructures of the suspension have been discussed from the rheological behaviors and SAXS measurements. At 25 degreesC, G' is larger than G" in all omega regions, and G' is almost independent of omega, and the diffraction peak is detected by SAXS. These results mean that a three-dimensional network of interconnected lattice-like flocculated structure is formed. With increasing temperature, omega dependency of G' becomes stronger and distance of the particles of the structure does not changed. These mean the network linkage is disrupted partially by thermal motion, and the interconnected lattice-like flocculated structure changes to an isolated lattice-like one with increasing temperature. With increasing the degree of neutralization, an isolated structure changes to an interconnected three-dimensional structure decreasing the thermal motion just like decreasing temperature.