Insulin pen carrying device convenient to assemble

The utility model discloses an insulin pen carrying device convenient to assemble, which comprises a plurality of single bodies, each single body comprises a square insulin pen accommodating part, and the four side walls of each insulin pen accommodating part are respectively provided with an inserting part capable of connecting the plurality of single bodies. The insulin pen containing part internally comprises a containing cavity which is formed in the inner layer and used for containing an insulin pen, a temperature sensor is installed in the containing cavity, a cooling cavity is formed in the periphery of the containing cavity, a semiconductor chilling plate is installed at the bottom of the insulin pen containing part in a sealed mode, and the refrigeration face of the semiconductor chilling plate communicates with the cooling cavity; the number and the assembling shape of the carried single bodies can be selected at will according to requirements, the single bodies are connected into a whole, and the s