Abstract: The instant disclosure relates to a wireless data transfer card capable of adapting to a memory card. The wireless data transfer card includes a main body and a circuit module disposed therein. The main body has a data transfer interface, and a slot configured for receiving a micro SD memory card is formed on the main body. The circuit module is electrically connected to the data transfer interface and the slot. Based on the generation of a trigger signal, the circuit module enables the wireless communication operation. Thus, data from the memory card can be transferred wirelessly to a remote location through WiFi. The wireless data transfer card of the instant disclosure is usable with a digital camera, a digital camcorder, or a mobile communication device with picture-taking capability to share the stored files instantly through the wireless network.