A strengthened assembly type hand tool comprises a tool head part, tool pants, a tool handle and a handle. The tool handle comprises a first pipe and a second pipe which are connected through a clamping screwing manner. The tool pants are of a cylindrical structure. A tool pants limiting body is inserted in the tool pants, and the limiting face of the tool pants limiting body is of an inward-concave groove structure. The tool pants are provided with two opposite L-shaped tool pants clamping grooves. The tool pants clamping grooves are opened from the pants ends and extend in the tool pants depth direction, and transverse parts of groove end portions are obliquely arranged. According to the hand tool, the tool handle of the hand tool is of an assembly type split structure, connection and fixation are conducted through the clamping screwing manner, the connection relationship is firm and stable, and waggling is not likely to be generated. The strength of the connecting part is large, high-strength work can be finished, assembly is easy, and manufacturing is easy.