Acoustic radiating method is used to determine the burning rate of the propellants which contain superfine Cu₂O（ 0. 2μm）, ordinary Cu₂O（ 3μm）,copper chromic oxide（YB ）,copper（Ⅱ）-containing organic complex（QC）or their different combinations under the pressure of 4～8MPa. From the experimental results, it can be seen that the superfine Cu₂O is significantly beneficial to the burning rate of RDX/AP/ HTPB propellant.2% of this Cu₂O can increase the burning rate by 77.1% , which is 5 times higher than that of ordinary Cu₂0.When combined with YB and QC which are two copper-containing catalysts, it can increase the burning rate by 120% and lower the pressure exponent by 50%, respectively.