Provided is a method for producing a pyrazolecarboxylic acid derivative which is useful as an important intermediate for 11ssHSD-1 inhibitors. Formula (XI) (In the formula, each of R1 and R2 independently represents a hydrogen atom or a substituted or unsubstituted alkyl group; R3 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted cycloalkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a substituted or unsubstituted heterocyclyl group; and R4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted cycloalkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a substituted or unsubstituted heterocyclyl group).