The utility model provides a but recovery type trace sample cell based on components of a whole that can function independently mode, not need to the sample preforming carries out or film, pretreatment such as drying, realization that not only can be very simple quick is to powder sample's measurement, moreover, to the less sample of sample size can realize equally fast, easy measurement of retrieving, expansion spectrophotometry range of application. A but recovery type trace sample cell based on components of a whole that can function independently mode, includes reference sample pond, need checking sample pond and sample lid, it is used for filling out the first recess of putting the reference sample to be equipped with in the middle of the reference sample pond, be equipped with the second recess that is used for placing need checking sample in the middle of the need checking sample pond, the sample lid lies in directly over kind sample cell that awaits measuring, first recess, second recess and sample tectiform form and size are consistent.