To produce a polishing pad uniformly expanded.

An isocyanate-ended prepolymer as an isocyanate group-containing compound is previously mixed with a foaming agent containing at least either one hydrocarbon of a 5C hydrocarbon and a 6C hydrocarbon, for example, a cyclopentane as a main component to afford a premix solution and the premix solution is mixed with 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA) as an active hydrogen-containing compound and the mixture is cured to provide a foamed urethane molded product and the polishing pad is produced from the foamed urethane molded product.