To provide a cold service thermal insulating container which is excellent in shape retaining strength when the front side is opened, can regulate shaking of left and right side wall parts, and can stably support a load from the upper part when the front wall part is opened under a stacked condition.

The cold service thermal insulating container A comprises a plane view approximately rectangular container body 10 consisting of a bottom part 11, front and back wall parts 12 and 14 and left and right side wall parts 13 and 15 formed of a synthetic resin foam as a main material, and a lid body 20 covering its upper face opening part 10a. At least a part of the front wall part 12 of the container body 10 is openable outside through a connecting part 31a foldable at the lower end part in the cold service thermal insulating container A. A plane view approximately rectangular reinforcing frame 1 being continuous over the whole periphery including the openable front wall part 12a is attached on the upper part opening end part of the container body 10 to stabilize a front opening condition.