The invention relates to the field of electrical energy storage cabins, in particular to an energy storage cabin air duct system and an energy storage cabin with the air duct system. The energy storage cabin air duct system comprises a main air duct and two or more branch air ducts. The main air duct is provided with an air inlet and an air outlet communicated with the branch air ducts. The branch air ducts are divided into far-end branch air ducts and near-end branch air ducts from far to near according to the distance between the branch air ducts and the air inlet of the main air duct, the number of the far-end branch air ducts is at least one, and the cross sections of the far-end branch air ducts are gradually reduced from the end close to the main air duct to the other end. Due to the fact that the branch air ducts of the energy storage cabin air duct system are divided into the far-end branch air ducts and the near-end branch air ducts from far to near according to the distance between the branch air ducts and the air inlet of the main air duct and the cross sections of the far-end branch air ducts are gradually reduced from the end close to the main air duct to the other end, air pressure in the far-end branch air ducts can be maintained easily, it is promoted that the air outflow speeds of the branch air ducts are kept roughly the same, and finally the performance and the temperature control effect of a temperature control system of an energy storage device are guaranteed.