The invention discloses a sludge mixed combustion amount evaluation method for sludge mixed combustion. Te method comprises the following steps: firstly obtaining target information of a boiler, and then judging whether operation information of the boiler in the target information is in a first normal range or not, and whether content information of a combustion product of the boiler is in a second normal range or not, so as to evaluate whether the sludge mixed combustion amount meets a preset requirement or not. Through the scheme, by judging whether the operation information of the boiler inthe target information corresponding to the sludge mixed combustion amount in the boiler is in the first normal range or not and whether the content information of the combustion product of the boiler is positioned in the second normal range or not, whether the current sludge mixed combustion amount can guarantee the safe and stable operation of the boiler and ensure that the combustion product of the sludge mixed combustion boiler cannot severely pollute the environment is evaluated. In addition, the invention further comprises a sludge mixed combustion amount evaluation device, equipment and a storage medium with the effect the same to the method.