A method for eliminating interference in a receiver (RX) includes: obtaining Bluetooth (BT) information and wireless local area network (Wireless LAN, WLAN) information by performing detection on at least one RX signal, wherein the RX signal is received through an antenna of the RX, and the RX signal includes components of both a BT signal and a WLAN signal that are respectively emitted from at least one transmitter (TX); and performing maximum likelihood (ML) joint detection on frequency representatives of the RX signal according to the BT information and the WLAN information and according to a predetermined library, in order to extract at least one of a reproduced version of the BT signal and a reproduced version of the WLAN signal. An associated apparatus is also provided.