The utility model provides a solar panel installation frame, is including being located the section bar of connecting forming frameworks with many planar intercrossing, the rigidity at the positive center of frame have one with the spliced pole of the section bar place perpendicular extension in plane, the section bar passes through the connecting piece can dismantle the connection, said section bar is a cavity tubulose section bar, has at least one on its outer peripheral face to the recessed recess in the inside of section bar, the open-ended width of recess is less than the width of recess body, the recess extends along the length direction of section bar, the connecting piece includes can insert with the outer diameter assorted body of section bar and with this body coupling and with the internal diameter phase-match of section bar and lies in connecting portion in the section bar. This solar panel installation frame, the special construction's through section bar and connecting piece design for whole rack mount dismantles very simply quick, easily processes in addition, and the cost is lower bearing capacity is stronger, can adapt to to connect heavier solar panel