Composite material container and method for forming composite material layer thereof

Disclosed is a method for forming a composite material layer of a composite material container, the method comprising: winding a continuous fiber (10) around the outer surface of a liner (2) at a predetermined angle to form at least one composite material layer (1); and adding an additive (11) between the composite material layers (1) and/or at an inner surface and/or at the outer surface so as to prevent the composite material layer (1) from cracking in a fiber direction. Also disclosed is a composite material container having the liner (2) and the composite material layer (1), the composite material layer (1) being prepared via the above forming method.