Abstract: An electronic device supporting base including a supporting bracket and a fixed base is provided. A first pivoting portion for being pivoted to the fixed base is disposed at one end of the supporting bracket, a second pivoting portion for being pivoted to a positioning plate is disposed at the other end of the supporting bracket, and an accommodating groove is disposed on the fixed base for insertion of an electronic device therein, so that when the electronic device is obliquely placed on a tabletop, the supporting bracket and the positioning plate can be rotated to support the electronic device, and when the electronic device is carried, the supporting bracket and the positioning plate can be rotated to be flatly attached to the back side of the electronic device.