Frame assembly

A frame assembly includes four frames and three pivot modules. The four frames have a detachable corner and three rotatable corners. The three pivot modules are disposed at the three rotatable corners. Each pivot module includes a first pivot, a second pivot, a third pivot, two first fixing plates, two second fixing plates, two first fixing members, two second fixing members and two third fixing members. The first and second pivots are rotatably disposed on two adjacent frames. The first fixing plates are sleeved on opposite ends of the first and third pivots and the second fixing plates are sleeved on opposite ends of the second and third pivots. The first fixing members are fixed on opposite ends of the first pivot, the second fixing members are fixed on opposite ends of the second pivot, and the third fixing members are fixed on opposite ends of the third pivot.