To investigate the influence of fluororubber coating on the combustion properties of micro-sized aluminum powder （μ-Al）， several methods such as laser ignition，constant volume burning and thermal analysis were employed to study the combustion and thermal performance of 5 μm and 50 μm aluminum powder coated by different content of fluororubber. Ignition delay time， burning speed， state of combustion， combustion heat and thermal reaction properties of these samples were presented. It showed that un-coated μ-Al cannot be ignited by laser in a 0.1 MPa oxygen atmosphere. For the coated 5 μm aluminum powder （5μ-Al@n%FP）， ignition delay time can be reduced from 91 ms to 31 ms， burning speed can also be increased from 3.08 mm·s^-1 to 364.96 mm·s^-1， and combustion heat can reach up to 27.61 kJ·g^-1 by varying the content of fluororubber in the composite particles. Similarly， for the coated 50 μm aluminum powder （50μ-Al@n%FP）， ignition delay time can be reduced from 130 ms to 40 ms， burning speed can also be increased from 1.80 mm·s^-1 to 43.78 mm·s^-1， and combustion heat can reach up to 26.08 kJ·g^-1. Based on thermal analysis （TG）， the reaction depth of fluororubber and the thickness of Al₂O₃ were calculated. It revealed that the reaction between fluororubber and μ-Al occurred merely on the surface of aluminum particles. Under the same reaction condition， the thickness of Al₂O₃ had no correspondence with the size of μ-Al.