To provide a construction method of a low temperature underground tank institution capable of efficiently carrying out work of the low temperature underground tank institution and reducing a construction cost as well as the shortening of the whole construction period of time.

Preceding work of a boring hole 6 is made in the peripheral ground before a cave 2 as a storage tank 1 is excavated, the peripheral ground is frozen by circulating a coolant into the boring hole to form a pre-freezing domain 5, the inside thereof is excavated to construct the storage tank in a state to maintain the pre-freezing domain as it is and, at the same time, the pre-freezing domain is maintained as it is until a low temperature fluid is stored in the completed storage tank. The construction work of the storage tank is carried out as a tunnel-like cave to gradually bore every predetermined boring length, and in the case the boring in each step is carried out, the preceding work of the boring hole 6 is made ahead by one boring from a cutting face, and the boring is carried out by forming the pre-freezing domain 5 in the peripheral ground therefrom.