The present invention discloses an optic distribution meter that includes a testing system and an imaging system. The testing system includes an arc-shaped brace which has an extended object holder; and a rail base which has a first rail. The imaging system, set at a side of the testing system, includes a screen and an image catcher. With the implementation of the present invention, the rail base is able to rotate or move an object to a test angle with very little light blocking of measurements. Besides, with the first rail supporting the object, the incident angle of the light of a light source to the object remains unchanged when the measuring angle of the imaging system is changed. Thus ensure the accuracy of measurements of the optic distribution meter.