To provide a method for constructing a cattle shed or a milking shed capable of shortening the period of construction work of the cattle shed or milking shed facilitates and readily carrying out change in structure or scale of facilities of cattle shed or milking shed already constructed.

Plural floor plates 10 each having a size and a weight capable of readily carrying, a joining tool for mutually joining the floor plates, a stool 30 and a fixing tool 40 for standing the stool 30 on the floor plates 10 are simultaneously produced in a plant. Then, in a construction site of the facilities of a cattle shed or milking shed, the plural floor plates 10 are put side by side in a plane and mutually joined by using joining tools. The stool 30 is fixed in a state stood on the floor plate 10 by using the fixing tool 40 to form the objective cattle shed or milking shed facilities in which the stools 30 are stood on the floor of cattle shed or milking shed having a prescribed area.