The invention relates to the technical field of transportation machinery, in particular to a power selection device with a manual operation shifting shaft and aims at solving the problem of low switching success rate of power selection of dual-power transportation equipment. The power selection device with the manual operation shifting shaft comprises a box body, a gear, a gear shaft, a two-way clutch, a one-way overrunning clutch, a flexible shaft and a spring. For the power selection device with the manual operation shifting shaft, by arranging the two-way clutch and the one-way overrunningclutch in the power selection device, the two-way clutch is manually operated to select a power transmission path, and once the two-way clutch is difficult to engage in the switching process, the one-way overrunning clutch can be operated remotely through the flexible shaft arranged outside the box body so as to change an initial relative position of engaging elements in the two-way clutch and increase the success rate of switching operation of the two-way clutch; and after the switching operation is finished, the inner portion and the outer portion of the one-way overrunning clutch are disengaged under the effect of spring force, and normal power transmission is not influenced.