The present study examined the effects of generating solution in problem solving upon knowledge acquisition and its application. In acquisition phases, subjects were randomly assigned to generating condition, read condition, or control condition. In generating condition, subjects first generated solutions to a base problem and then received a feedback of correct solution. Subjects in generating condition were divided into a correct solution group and an incorrect solution group. In read condition, subjects were to read and memorize a story describing the base problem and its solution. Subjects in control condition were not presented with the base problem. In application phase, subjects in each condition solved either of the two types of target problem. The results showed that the generating activity had an effect on the incorrect solution group rather than the correct solution group, and that the subjects in read condition could apply the base knowledge to only the same structure target problem.