Transfer vacuum sample holder and vacuum interconnection system

The invention discloses a transfer vacuum sample holder. The sample holder comprises a second holder body assembly and a thermocouple, wherein the second holder body assembly is provided with a containing groove and a pair of second inserting grooves formed in the two opposite sides of the containing groove, and the two second inserting grooves are the same in extending direction and communicate with the containing groove; the thermocouple is fixed on the second holder body assembly and is positioned at a first end of an accommodating groove; the thermocouple extends to a lower part of the accommodating groove and is used for being in contact with a small sample holder when the two sides of the small sample holder in the width direction are inserted into second inserting grooves from second ends of the accommodating groove. The invention further discloses a vacuum interconnection system. The transfer vacuum sample holder has the function of allowing the small sample holder to be inserted and fixed, can be app