Mattress with mechanical weighing function

The invention provides a mattress with a mechanical weighing function. The mattress comprises an air pump, a mattress body, an airbag set, an air pipe, and a bed frame. The mattress body is located above the bed frame, the airbag set is located between the mattress body and the bed frame, the airbag set is connected with the air pump through the air pipe, a pressure sensing mat is arranged between the airbag set and the bed frame, the pressure sensing mat is internally provided with a detouring gas circuit, the pressure sensing mat is provided with an air inlet and an air outlet, the air inlet is connected with the air pump, and the air outlet is communicated with atmosphere. The pressure sensing mat is added in the mattress body, when patients of different weights lie on the mattress, the weights are automatically recognized, an optimal treatment effect is given to the patients, a user does not need to input the weights of the patients manually, the weights of the patients are automatically measured and dete