The invention discloses a double-column horizontally rotary type isolation switch testing device. The existing outdoor isolation switch testing platform is mainly reshaped on the basis of an original one, and the functions are single and do not have the continuously quantitative detection function. The invention adopts the following technical schemes. The double-column horizontally rotary type isolation switch testing device comprises a transmission mechanism, a power driving mechanism and a force load programmable simulation mechanism wherein the simulation mechanism includes a bearing base, a bearing installed on the bearing base, a transmission connecting rod, and a second driven flower disc at the upper part of the bearing base. The lower end of the second driven flower disc penetrates the bearing and is then equipped with an electromagnetic brake; the transmission connecting rod is provided with a force sensor; and one end of the transmission connecting rod is connected with the second driven flower disc while the other end is connected with the driving flower disc. When the testing device moves, it acquires the data of the sensor and quantitative research on the performance of the isolation switch is possible.