The 2014 presidential election in Brazil is the most competitive one since the re-democratization of Brazil. Economic stagnation and social protest had already brought barriers to Rousseff who sought a second four-year presidential term. The plane crash and exposure of corruption scandal of Petrobras had complicated the election process. Finally，with the firm support from the lower- and middle-class voters Rousseff narrowly won the 2014 election，but how to get out of the economic dilemma is the important challenge facing Rousseff and the reforms in fields such as politics，economic structure and anti-corruption have been difficult and long-term tasks. As regards foreign relations，Brazil continues to adhere to diversification strategy and strengthens economic ties with Asia-Pacific，especially with China besides consolidating relations with the EU and seeking a rapprochement with the US government，committed to building a more balanced and diversified world.