A support mechanism includes a support frame, a first hinge assembly, and a second hinge assembly. The support frame includes a first pivoting portion and a second pivoting portion aligned with the first pivoting portion. The first hinge assembly is mounted to the first pivoting portion, and the second hinge assembly is mounted to the second pivoting portion and aligns with the first hinge assembly. The support mechanism is durable. The present disclosure further provides an electronic device using the support mechanism. As the first pivot portion and the first hinge assembly is arranged in a line coaxial with the second pivoting portion and the second hinge assembly, an amount of force applied for supporting the main body of the electronic device is dispersed in a line, rather than being focused on one point, such that, an adjustable viewing angle to the main body is also provided.