The present invention relates to the field of display technology and discloses a detection-evaluation method for moiré pattern, comprising steps of: S1, detecting luminances at a plurality of continuous positions in a predetermined region of a display panel which is displaying a full white picture, so as to obtain a luminance curve; and S2, judging whether a graphics including peaks and valleys exists in the luminance curve, if the graphics exists, determining that the moiré pattern exists. The present invention further discloses a detection-evaluation device for moiré pattern. The present invention realizes an effective and accurate detection for moiré pattern, and overcomes shortcomings in visual inspection.