To provide a cold insulation system which enables lessening of labor on cold-insulating an object to be cold-insulated and also does not destruct a natural environment.

The cold insulation system 1 is equipped with a control device 4 which conducts a freezing control of a cold insulation material 3 in a freezer 2 on the basis of the temperature of the cold insulation material 3 in the freezer detected by a temperature sensor 7 and the amount of the cold insulation material 3 held in the freezer 2 that is detected by a held amount sensor 8 and which also determines replacement of the cold insulation material 3 exerting cold insulation on a corpse a, when the bodily temperature of the corpse a detected by a bodily temperature sensor 9 rises to a prescribed value, and gives information about the replacement by means of an alarm 10.