PROBLEM TO BE SOLVED: To provide a cold insulating container capable of rapidly cooling an article to be packaged inside thereof and increasing the cold retaining capacity of the cooled article to be packaged.SOLUTION: A cold insulating container 10 comprises a container body 20 and a lid body 30 attachable to the container body 20, and a storage space S is formed inside the cold insulating container in a state where the container body 20 is covered with the lid body 30. A through hole 12 through which the outside of the cold insulating container 10 is communicated with the storage space S is formed on a side wall part 11 of the cold insulating container 10. In a side view when the side wall part 11 of the cold insulating container 10 is viewed from a horizontal direction H, the storage space S cannot be seen via the through hole 12 from the outside of the cold insulating container 10, and the through hole 12 is formed in such a manner that the storage space S can be seen via the through hole 12 from the outs
