System of recycling exhaust heat from internal combustion engine

A system for recycling exhaust heat from an internal combustion engine is based on a recycling type of circulating a working fluid using the exhaust heat from the internal combustion engine. The system may include an EGR line configured to circulate a portion of exhaust gas generated from the internal combustion engine to an intake side, a working fluid circulation line configured to rotate a turbine with a working fluid vaporized by heat transferred from the EGR line, and an EGR side heat exchange unit configured to thermally connect the EGR line to the working fluid circulation line to cool an EGR gas by transferring heat from the EGR gas to the working fluid.