According to Song, the two sides will sign a series of cooperation documents involving the economy and trade, finance, education, culture and climate change.
Last week, China and Switzerland launched the ninth round of negotiations on a free trade agreement.
The two sides have narrowed their trade differences in goods, the service trade, rules of origin, trade facilitation, intellectual property and competition policy, said Jiang.
He said the two sides have made their intentions to end the talks clear, and both hope to reach a mutually beneficial and high-quality agreement as soon as possible.
"China-Germany relations are at the forefront of China-Europe relations, featuring the most frequent high-level contacts and the most effective dialogue mechanisms," said Song.
The high quality of bilateral ties has benefited from the strategic vision and political courage of both countries' leaders, he noted.
In Germany, Premier Li will meet with President Joachim Gauck and hold talks with Chancellor Angela Merkel. He will deliver a speech at a business luncheon and have extensive contact with people from the political and business communities.
Li and Merkel will also officially launch "the year of languages" between China and Germany, an initiative meant to promote the study of each other's languages among the people of the two countries, said Song.
The bilateral trade volume reached $161.13 billion in 2012, accounting for 29.5 percent of China-EU trade, said Jiang.
To further expand bilateral cooperation, a series of documents will be signed regarding cooperation in manufacturing, investment, finance and urbanization, said Song.
The German side has attached great importance to Li's visit, said Song, adding that he believes the visit will build a sound working and personal relationship between Li and Merkel and further advance the development of bilateral ties.