PROBLEM TO BE SOLVED: To provide a both eyes pupil testing apparatus that accurately measures information on pupils by determining that results of the tested pupils are properly measured.SOLUTION: The both eyes pupil testing apparatus includes: an eyeball imaging unit 1 that images both eyeballs of the right and left eyes at the same time a pupil detection unit 3 that detects the left pupil and the right pupil from images of the eyeballs including the right and left eyes a pupil information calculation unit 4 that calculates information on the left pupil based on the left pupil and information on the right pupil based on the right pupil a pupil information determination unit 5 that determines whether the information on the pupils of the right and left eyes are properly calculated by comparing each of the information and a pupil information estimation unit 7 that estimates the proper information on the pupils of the right and left eyes when it is determined that the information on the pupils of the right and left eyes are not properly calculated.