The invention discloses a fixed installation device of geothermal energy equipment. The fixed installation device comprises a base, two fixing piles are correspondingly and symmetrically arranged on the left and right sides of the bottom of the base, two limiting plates are symmetrically arranged on the right side of the top of the base, limiting grooves are formed in the left sides of the limiting plates, first fixing plates are fixedly connected to the tops of the limiting plates, first fixing bolts are arranged on the left sides of the tops of the first fixing plates, a sliding rail is fixedly connected to the top of the base, and a sliding block is slidably connected to the surface of the sliding rail. According to the fixed installation device, the base, the limiting plates, the firstfixing plates, the first fixing bolts, the sliding rail, the sliding block, a first threaded sleeve, a limiting pin, a supporting column, a ball, an electric pushing rod, a second fixing plate, a second fixing bolt and a second threaded sleeve are mutually matched, the fixed installation device of the geothermal energy equipment is conveniently installed, the installation difficulty of the installation personnel for a main body of the geothermal energy equipment is lowered, the installation time of the installation personnel is shortened, and the working efficiency of the installation personnel is improved.