Otto Pérez Molina，Guatemala’s former army chief and president，during his third year in office，has put on a good performance，but meanwhile faced many challenges. In 2014，the economic growth rate reached 4%，as Guatemala rose in the ranking of Global Competitiveness Index and public security dramatically improved. However，the remarks of the opposition and relevant research also show that the situation is not impeccable. The problem of corruption，uphill struggle of new political alliance and uncompleted social pacts have posed direct challenges to the authority at its mid-term.