The third cabinet of Federal Chancellor Angela Merkel formed another grand coalition of the CDU/CSU and SPD. Differing from the black-yellow coalition，which was always troubled by crises and conflicts，the black-red coalition has been working smoothly，though the coalition building was complicated and time consuming. It has thus provided the grand coalition government with favorable conditions for launching series of reforms in the beginning year. The SPD has played the role of reform engine during the coalition agreement negotiation and since the joint government. The work of the new government has gained considerable support，but has also been criticized by academic and economic circles Among the three party leaders，special attention was paid to Sigmar Gabriel，who has been successfully transformed into a winner.