Provided herein is a portable charging case module. The portable charging case module includes a case part and an auxiliary battery part. The case part includes a body configured such that an accommodation recess is formed in the front thereof to be detachably combined with a terminal, a charging coil provided in the body and configured to wirelessly charge the terminal, and a first terminal unit formed in the rear of the body and configured to be electrically or data-wise connected to the terminal. The auxiliary battery part is detachably combined with the rear of the case part, and includes a second terminal unit configured to be electrically connected to the first terminal unit in the front of the auxiliary battery part facing the rear of the case part, and a connection port configured such that a connector connected to an external power source is inserted thereinto.