In this paper, the analytical framework constituted by the constitutional system, electoral system, and election timing is used to explore Taiwan's constitutional operations. Before 2008, Taiwan's parliamentary electoral system was SNTV, the presidential electoral system was plurality system, and the election timing was midterm election. These three institutional factors changed Taiwan's parliamentary party system into a multi-party system with two-distinct coalition. The SNTV transformed the constitutional system from vague semi-presidential system back then into presidential parliamentary system. Meanwhile, with the combination of president-parliamentary system and multi-party system with two-distinct coalition, as well as the influence of the midterm elections, the divided government/minority cabinet was formed. After 2008, Taiwan's parliamentary electoral system was changed to the mixed-member majoritarian system, the presidential electoral system was still plurality system, and the election timing changed into counter-honeymoon and simultaneous elections. These three factors have transformed Taiwan's parliamentary party system into a two-party system. With the combination of presidential parliamentarism and two-party system, as well as the influence of the counter-honeymoon and simultaneous elections, the consistent government/one-party cabinet has been formed. To construct a more appropriate institutional combination of Taiwan's constitutional system, electoral system, and election timing, this paper deems it necessary to maintain Taiwan's current mixed-member majoritarian system, but the proportion of seats in the proportional representation should be increased, while the party threshold should be lowered. As far as the presidential electoral system is concerned, changing Taiwan's current plurality system into majority system may be considered. Concerning the election timing, the simultaneous election should be maintained, but the president and the parliament should also take office simultaneously. With regard to the constitutional system, it's necessary to transform Taiwan's current presidential parliamentarism into premier-presidentialism.