The invention discloses a photovoltaic power generation device capable of automatically tracking, comprises a fixing plate, wherein left and right sides of the fixing plate bottom are fixedly connected with a first supporting plate, the bottom of the first supporting plate is movably connected with a rolling wheel, a bottom plate is arranged below the fixing plate, and a fixing groove adapted to the top of the bottom plate and corresponding to the rolling wheel is arranged. In accordance with that present invention, rotating shaft, first roller, Belt, second roller, Fixed shaft, rolling bearing, first support plate, rolling wheel, Stationary plate, stabilized motor, stabilized shaft, The rotating gear, the gear bar, the second connecting block, the second rotating shaft, the connecting rod, the first rotating shaft, the first connecting block, the transverse plate, the stabilizing plate and the solar panel cooperate with each other to realize the automatic tracking effect, solve the problem that the photovoltaic power generation does not have the automatic tracking ability, and the photovoltaic power generation device can carry out the angle deviation according to the needs, thus bringing great convenience to the users.