The invention discloses a secondary assembling method for a dynamical-type lead storage battery. The method is characterized in that the monomer resistors having similar cut-off voltages through primary assembling are connected in series to a battery pack, the performances of the resistors in the battery pack are similar, the battery pack has good consistency, and a good base based on same assembling is established for subsequent secondary assembling; in addition, secondary assembling is carried out on the monomer battery according to the cut-off voltage and the open-circuit voltage, assembling is carried out according to the cut-off voltage, a parameter of the open-circuit voltage is increased, voltage difference of the monomer battery of the battery pack can be effectively reduced, and the precision of the secondary assembling and the consistent performance of the monomer battery are increased.