The invention discloses a solar panel support adjustment device for photovoltaic power generation, and relates to the technical field of electric push rod support. The device includes a fixed base, asupport plate hinged on a side wall of a vertical column, an adjustment mechanism arranged on the vertical column and used for adjusting an angle between the support plate and the vertical column, a pair of sliding bearing racks slidably mounted on the support plate for placing a solar panel, limiting mechanisms arranged on the sliding bearing racks and used for limiting the solar panel and a steering mechanism arranged in the fixed base and used for driving rotation of the vertical column. According to the invention, the set adjustment mechanism drives the support plate to deflect at an anglerelative to the vertical column, so that the limiting mechanisms drive the solar panel to deflect to receive irradiation of sunlight well. The set steering mechanism drives circumferential adjustmentof the support plate, so that the solar panel can be adjusted more flexibly. The set limiting mechanisms provide elastic connection between the solar panel and the support plate, and has longitudinaland lateral anti-vibration effect on the solar panel.