A common-source differential power amplifier comprises a compensation circuit, which comprises a first and a second compensation transistors and two signal terminals, a source and a drain of the first compensation transistor are short-circuited and connected to a gate of the second compensation transistor and one signal terminal of the compensation circuit, the source and the drain of the second compensation transistor are short-circuited and connected to the gate of the first compensation transistor and the other signal terminal of the compensation circuit, the two signal terminals of the compensation circuit are further respectively connected to two differential signal input terminals of the common-source differential power amplifier directly or via a capacitor, where the first and second compensation transistors in the same compensation circuit are both NMOS transistors or both PMOS transistors. An electronic device including the power amplifier is also disclosed.