The invention discloses a method for detecting deodorizing effect of paper-making sludge. The concrete steps of the method are as follows: deodorizing wet sludge is added with an H2O2 or NaClO treatment solution with a concentration in mass percentage of between 0.10 to 1.00 percent, and the concentration of the NaClO treatment solution is the effective chlorine concentration; the mixing ratio of the wet sludge tothe treatment solution is 0.5g/ml, and after the wet sludge and the treatment solution are mixed with even stirring and the wet sludge is immersed in the treatment solution for 10 to 12 hours. The method of the invention has the advantages of higher removal rate and reliability of deodorizing the paper-making sludge, treating odors with large air flow and high concentration, removing mixed odorsby the multi-stage sharing washing, along with small floor areas, low investment and simple and convenient operation.