The invention discloses a layered measurement device for brine concentration. A vacuum negative pressure pump is connected with an air chamber and can form a stable negative pressure in the air chamber through vacuum suction; a pressure relief valve is arranged on the wall of the air chamber, and the negative pressure in the air chamber can be released by opening the pressure relief valve; the air chamber is connected with a T-shaped adapter tube; the outside of a connector between the air chamber and the T-shaped adapter tube is sealed by means of an epoxy resin adhesive; a liquid pipe group to be measured is communicated with the T-shaped adapter tube; the outside of a connector between the liquid pipe group to be measured and the T-shaped adapter tube is sealed by means of the epoxy resin adhesive; a standard liquid pipe is a transparent pipe marked with scales and is communicated with the T-shaped adapter tube; the outside of a connector between the standard liquid pipe and the T-shaped adapter tube is sealed by means of the epoxy resin adhesive. The layered measurement device disclosed by the invention is simple in structure and convenient to use, can be used for measuring the concentration characteristics of brine of multiple layers in a solution mining process for gas storage caverns of rock salt, makes use of a pressure intensity balance principle, and is easily available in materials, low in cost, simple to operate, high in precision and capable of being recycled.