People have been experiencing lot of incidents for their lives which results in gaining their impetus. Each impetus derives an emotion and such emotion is either of positive or negative one. The positive emotion motivates activation of his life but the negative emotion demotivates one. Specifically, the negative motivation will be much worse for children and it could be adversely affected to their emotional development. The paper first characterizes how to regulate an emotion in a view of psychology base and also characterizes how to regulate the emotion for children. And then, we analyze serious game contents which have been developed to care a negative emotion for children and youth to derive some game elements to be used in the games. Finally, by combining the two characterizations of regulation of emotion in psychology view and the serious games, we propose effective game elements for caring children’s negative emotion. We expect that the results will provide a good guideline when we make a serious game to care children’s negative emotion.