Disclosed is multi-functional smart wireless charging device for cell phone in horizontal placement and vertical placement, including a hollow main body rear shell. A protection assembly is fixedly provided in the main body rear shell. A main PCB is provided on top of the protection assembly. One side of the PCB being abutted against a wireless charging PCB fixedly provided on top of the protection assembly. The wireless charging PCB is connected with a main body front shell on one side of the wireless charging PCB remote from the main PCB. A wireless charging bottom shell is slidably connected with the main body front shell at its one side remote from the main body rear shell. One side of the wireless charging bottom shell is provided with a wireless charging front shell. The device may also charging by wire when wireless charging is not carried out.