The invention discloses an intravascular sub-
hypothermia therapeutic apparatus for
Intensive Care Unit. The apparatus comprises a mounting bracket, wherein four corners of the bottom of the mounting bracket are movably connected with universal wheels; the mounting bracket is provided with a first placement chamber and a second placement chamber; a normal
saline tank is arranged in the first placement chamber and a
refrigeration box is arranged in the second placement chamber; the normal
saline tank is connected with the
refrigeration box through a first conduit; one end, away from the first conduit, of the normal
saline tank communicates to a normal saline output
pipe; and a first switching valve is arranged on the normal saline output
pipe. Through the arrangement of a first inner box anda second inner box in the
refrigeration box of the intravascular sub-
hypothermia therapeutic apparatus and through the communication between the first inner box and the second inner box by a second conduit, the normal saline in the first inner box can be fully cooled and stored in the second inner box, and the stored normal saline can be introduced into the
human blood vessels and at the same time the normal saline in the first inner box can be cooled again so that an absolute
cooling effect of the output normal saline can be guaranteed.