The present invention relates to a set of 
system and usage method for storing samples in a laboratory freezer, which belongs to the field of experimental equipment. The 
system includes an inner upper frame of the freezer, a lower frame inside the freezer, a partition, a 
label, a sample bag and a 
record book;  The inner upper frame of the freezer is set on the upper part of the freezer and arranged for one week along the inner wall of the freezer. The lower frame inside the freezer is arranged at the lower part of the freezer and arranged for one week along the inner wall of the freezer. The upper frame of the freezer is provided with an upper card groove and a 
label groove;  The board can be freely inserted into the upper card slot and the lower card slot opposite to each other; the 
label is provided with a first label, a second label, a connecting 
rope and a hook, the first label is at one end of the connecting 
rope, the second label hangs and the hook is connected  The other end of the 
rope; the sample bag is a bag that can be closed, and the sample bag is provided with a label storage bag; the 
record book records the storage information of the sample.  The 
system can be used to 
discharge the samples in an orderly manner, and it is convenient to retrieve and check the status of the samples.