provided are a polymerase chain reaction module and a pcr system including the same . the pcr module includes : a detachable pcr chip including a pcr chamber unit in which a pcr solution is accommodated ; a heater unit for heating the pcr solution in the pcr chip with a preset temperature ; a detecting unit for detecting a pcr signal of the pcr solution ; a pcr chip installation unit for mounting / detaching the pcr chip using a one - touch method , in which the heater unit is adhered to the pcr chip with a predetermined pressure when mounting the pcr chip and the heater unit is separated from the pcr chip when detaching the pcr chip ; and a housing covering at least the heater unit and the detecting unit so that they are not exposed to the outside .