The present invention relates to a measurement device including a trace sample-use high sensitivity light absorbing cell, the device comprising: a light absorbing cell containing a capillary tube of which both ends are open hollow shaped; a light absorbing cell mounting block on which one end of the light absorbing cell is mounted, and which comprises a light emitting unit, disposed on the upper portion of the light absorbing cell, for irradiating light to one end of the light absorbing cell; and a light receiving block which comprises a light metering immersion unit disposed in such a manner that the other end of the light absorbing cell is immersed in a sample contained therein, and which detects light that is irradiated to one end of the light absorbing cell and emitted to the other end thereof.