Abstract: Due to the nonlinear and strongly coupled characteristics of dual scale low NOx burners under variable load conditions, it is difficult to achieve coordinated control of combustion efficiency and low emissions. A fuzzy PID algorithm based adaptive control method for dual scale low NOx burners is designed. A dual scale low NOx burner model was constructed by decoupling the combustion process into two scales: the macroscopic air coal ratio in the main combustion zone and the microscopic classification in the reduction zone. Design a fuzzy PID adaptive control strategy to address the challenges of model parameter perturbations and strong constraints on multiple variables. The PID parameters are tuned online using two-dimensional fuzzy rules, and the control output of the fuzzy PID is converted into collaborative action instructions for a dual scale actuator to achieve adaptive control. The effectiveness and engineering applicability of this control method on dual scale low NOx burners have been verified through on-site industrial tests.