Hydraulic adjustable photovoltaic support device

The utility model discloses a hydraulic adjustable photovoltaic support device. The hydraulic adjustable photovoltaic support device comprises a plurality of support rods used for supporting and installing photovoltaic modules, pivot joint assemblies used for pivoting one ends of the support rods to a fixing member, and a hydraulic drive assembly connected onto the other end of the support rods, used for supporting the support rods and adjustable up and down. Angle adjustment of a photovoltaic support can be realized through hydraulic drive. Under the condition that the photovoltaic modules are not disassembled, through the hydraulic drive assembly, a rear pillar of the photovoltaic support can rise and fall at a large scale, and the inclining angle of the support can be changed so as to absorb more sunlight, thereby realizing that the photovoltaic modules obtain the optimal exposure dose at every season.