The invention relates to a simple layered water sampler. The simple layered water sampler comprises a water sampling barrel (8), a bracket (1) and fixing rings (2), wherein the lower end and the upper part of the bracket (1) are connected with the fixing rings (2) along radial stretch straight rods; the water sampling barrel (8) is arranged between the fixing rings (2) connected with the lower end and the upper part of the bracket (1), is tubular and is open at the upper and lower ends; the external diameter of the upper and lower ends of the water sampling barrel (8) is matched with the fixing rings (2); the upper end of the bracket (1) is connected with a wire rope (5); the other end of the wire rope (5) is connected with a top cover (10); a counter weight (6) is arranged at the junction of the wire rope (5) and the top cover (10); the top cover (10) is connected with the water sampling barrel (8) through springs (7) which are arranged on the two sides of the upper opening of the water sampling barrel (8); the lower end of the water sampling barrel (8) is provided with two half circular baffle plates (11). The water sampler has the advantages of simple structure, low manufacturing cost, high repeated utilization rate and high practicability.