GB/T 10807-2006 stipulates the determination of coalescence hardness of soft foam materials by indentation method. Soft foam coalescence materials are widely used, and its Hardness affects the product use experience. The standard specifies the scope of soft foam materials applicable, and introduces the principle of indentation method. Detail the technical requirements and calibration methods of the test instrument, standardize the sample preparation, covering size, shape, etc. Strict regulations are made on the test process, such as indenter size, indentation depth, loading rate, reading time and other operation details. The calculation and representation of the results are specified to provide scientific specifications for the accurate determination of soft foam coalescence hardness of materials, and help the product mass control and rational application.