The invention discloses a shell and tube graphite falling film evaporation heater, which comprises an upper tube box, a graphite liquid distribution device, an upper sealing element, a graphite heat exchange assembly, a lower sealing element and a lower tube box, wherein the upper tube box, the upper sealing element, the graphite heat exchange assembly, the lower sealing element and the lower tube box are sequentially overlapped from top to bottom. The graphite heat exchange assembly comprises more than two graphite heat exchange tubes, a sealing assembly and a tube plate, the sealing assembly is arranged between the graphite heat exchange tubes and the pipe plate in a sealed way, and in addition, the graphite heat exchange tubes are modified phenolic resin profiling graphite tubes. Therefore, the modified phenolic resin profiling graphite tubes are adopted as the graphite heat exchange tubes, the shell and tube graphite heat exchange tubes can be used for the falling film evaporation heater, the defects of the traditional shell and tube graphite heat exchanger are overcome, the use range of the shell and tube graphite heat exchanger is enlarged, the evaporation intensity is high, the heat exchange area is small, and the material circulation quantity is small.