Christmas tree port sealing device

The invention provides a Christmas tree port sealing device, which comprises a sealing body. The sealing body is composed of a plurality of sealing blocks; and the multiple sealing blocks are used forbeing arranged between a sucker rod and a Christmas tree and radially arrayed along the peripheral face of the sucker rod, so that the outer side faces of the multiple sealing blocks are connected with the inner wall of a port of the Christmas tree in an abutting mode, and the inner side faces of the multiple sealing blocks are connected with the outer surface of the sucker rod in an abutting mode. When a polished rod is replaced, the multiple sealing blocks can be radially arrayed along the peripheral face of the sucker rod, after being formed, the sealing body is inserted into the port andcan block oil and gas in the Christmas tree from overflowing from the position between the port and the sucker rod, and thus the well control safety risk, environment pollution and energy waste are avoided. 本发明提供一种采油树端口密封装置，包括