The invention discloses a mattress elasticity evaluation method. The method comprises the following steps that: a, static compression is carried out on a mattress material sample; b, stress relaxationchange in the static compression process are recorded, so that a trend equation that epsilon=at+b is obtained, wherein the parameter t represents static compression time, epsilon represents stress relaxation, a represents slope, and b represents stress relaxation at the moment of 0; d, weighted summation averaging is performed on stress relaxation change Delta epsilon i in more than one static compression time period Delta ti, so that a weighted average value delta is obtained, wherein i represents the ith time period Delta ti, n represents n Delta ti time points, and fi represents the weightof the stress relaxation change Delta epsilon i; and e, the elasticity of a mattress is judged according to an obtained Delta value, wherein the Delta value and the elasticity of the mattress are ina monotonically decreasing relationship. According to the mattress elasticity evaluation method of the invention, a mattress elasticity quantification method is established. Compared with a traditional elasticity evaluation method, the mattress elasticity evaluation method is more accurate in evaluation.