The utility model discloses a mattress, including top panel and lower panel, the top panel with be equipped with between the panel down that the one deck is used for bearing the weight of the upper portion load and with the upper portion load intermediate level of even transmission downwards, the equipartition has and is used for the elastic unit that bears and cushion the upper portion effort and transmit the upper portion effort downwards between top panel and the intermediate level, under the intermediate level between the panel equipartition have and be used for bearing and cushion the upper portion effort and with upper portion effort the 2nd elastic unit of transmission downwards, an elastic unit corresponds from top to bottom with the 2nd elastic unit and lays, forms multistage multi -storied buffer structure, perhaps an elastic unit and the 2nd elastic unit misplace from top to bottom and lay, form multistage multi -storied buffer structure. Through the second grade buffering of power and the load effect and the mechanics conversion functions in intermediate level for the user that the seat crouched on mattress can feel in order to feel that the soft comfortable seat of mattress crouches, can not experience the reaction effect that mattress brought again, and it is better to sit the comfortable feel who crouches.