As two kinds of organizational inertias，resource rigidity and routine rigidity have potential impacts on the firm’s bussiness performance．To analyze the gradient effects of the sizes of such two kinds of rigidities in explorative innovation on firm’s market share，agent-based modeling was adopted in this paper by applying its five basic analyzing steps．Results show that the decrease in resource rigidity or the increase in resources allocation flexibility did not necessarily increase the firm’s market share，while the increase in routine rigidity had negative effects on the market share．Furthermore，the weakened resource rigidity could alleviate the adverse effect of the routine rigidity on the market share，while the routine had flexibilities，it could destroy the positive effect of the weakened resource rigidity on the market share．In general，there is not complete synergy effect on firm’s market share between resource rigidity and routine rigidity in explorative innovation．