The invention discloses an anti-rotation photoelectric switch support for a tobacco laser impurity removal machine. The anti-rotation photoelectric switch support comprises a connecting plate (1), a limiting plate (2) and a photoelectric switch installing plate (3), wherein the limiting plate (2) and the photoelectric switch mounting plate (3) are respectively arranged on two ends of the connecting plate (1) and extend in opposite directions; a strip-shaped through hole (4) is formed in the connecting plate (1) in the length direction; a bolt (5) after penetrating through the strip-shaped through hole is in threaded fit with a screw hole in the tobacco laser impurity removal machine; the connecting plate (1) is fixed on the tobacco laser impurity removal machine; the limiting plate (2) abuts against the top surface of the tobacco laser impurity removal machine; and a photoelectric switch is arranged on the photoelectric switch installing plate (3). According to the anti-rotation photoelectric switch support, the single-hole installation can be achieved, the rotation can be effectively prevented, the installation firmness of the support can be improved, and the installation difficulty can be effectively reduced.