The object of the present invention is to provide an analysis apparatus that makes it possible to detect lights from a plurality of spots formed on an analysis chip without the lack of positioning accuracy while detecting the lights and the instability of holding the samples in spite of the downsized construction thereof.To achieve such an object as mentioned above, the analysis apparatus of the present invention for analyzing samples by means of detecting lights from a plurality of spots formed on an analysis chip so as to hold the samples comprising: a chip holder for holding the analysis chip; a light-sensitive detector for detecting lights from the spots; and a selectively light-transmitting unit for transmitting lights selectively from the desired spots to the light-sensitive detector, in a state where the analysis chip is held by the chip holder.