The invention relates to a device for containing, reacting and measuring, and a method of containing, reacting and measuring, and provides a device for containing, reacting and measuring, and a method of containing, reacting and measuring which is also able to effectively and quickly perform the reaction processing, measuring and identification.The invention comprises; a transparent container section having a liquid inlet/outlet and which is able to contain a base member with several kinds of substances for detection having predetermined chemical structures fixed at respective fixed positions which are arranged at predetermined spacing, and with each of the chemical structures associated with each of the fixed positions, a drawing and discharging section which is able to draw and discharge the liquid into and from the container section via the inlet/outlet, and a measuring device which is able to receive light from the contained base member, external to the container section and in a condition associated with the fixed position.