Abstract: In order to make it possible to realize rapid determination of concentration of flotation pulp, the true relative densities of different fine coal are determined using fully-automatic true density meter, and based on measured values, a new pulp concentration table for comparison is worked out. Besides, the types of measuring apparatuses used are also optimized. Practice shows that with availability of the new table, and through replacing measuring pot and low-precision balance respectively with graduated cylinder and high-precision balance. The measuring error of the pot method can be effectively reduced; and for producing the grade-10 concentrate, the mean measuring error is less than 4 g/L while for producing grade-4 concentrate, the mean error can be lowered down to 2 g/L, and the measurement can be generally executed within 5 minutes. The use of the optimized pot method can ensure both timeliness and accuracy of pulp concentration measurement, well demonstrating its effectiveness.