Biological sample vitrification carrier and usage thereof

A vitrification carrier for a biological sample, wherein said vitrification carrier includes a body and a sealing cap, the body having a first end and a second end, and wherein the first end of the body and a bottom of the sealing cap are sealed together to form a sealed placing area for the biological sample, and wherein a placing platform for the biological sample is included in said sealed placing area for the biological sample, and

• wherein a coolant circulation channel is included on said body, and wherein a flow-through pore is included on said sealing cap, wherein the coolant circulation channel and the flow-through pore are configured to enable a coolant in the coolant circulation channel to contact with an outside surface of the sealed placing area for the biological sample when the biological sample is subjected to cryopreservation, thereby cooling the biological sample, and wherein fluid communication between the coolant circulation channel and an inside volume of the sealed placing area is closed such that the biological sample in the sealed placing area is isolated from the coolant in the coolant circulation channel, and
• wherein the second end is a distal end of the body, said coolant circulation channel has a distal opening located on the distal end of the body and a side opening located on a side wall of the body, and said distal opening communicates with said side opening.