The utility model provides a distribution type serial connection coupling type power flow controller comprising a control cabin (1), a coupling transformer cabin (2), a hinge (3), and an anti-shedding hinged bolt (4). The control cabin (1) and the coupling transformer cabin (2) are integratedly formed, and are constituted by an upper cabin cover and a lower cabin cover, and can be opened and closed. One side of the upper cabin cover and one side of the lower cabin cover are connected together by the hinge (3), and the other side of the upper cabin cover and the other side of the lower cabin cover are fastened by the anti-shedding hinged bolt (4). The distribution type serial connection coupling type power flow controller can be used for the power flow control of the power transmission and power distribution network, and is advantageous in that the positive effect can be provided for the reduction of the power transmission losses of the power grid and the improvement of the stability and the reliability of the operation of the power grid; the power flow controller is usually fixedly disposed on the overhead line, the structural size is small, the weight is light, and the installation and the maintenance can be facilitated.