He helped the Blues to win three Premier League titles, four FA Cups and two League Cups during his eight-year spell. In that time he climbed to fourth on the list of Chelsea's all-time goalscorers with 157 and is also the club's leading scorer in European competition with 34. However, he decided to leave the Premier League club after their Champions League triumph.
Drogba said: "I'm looking forward to a new challenge and experiencing a new culture, and am excited about developments in the Chinese Super League.
"When Chelsea went to China last year, we had a great time and I met some amazing fans.
Chelsea hero exits after eight years
"I hope to help promote Chinese football around the world and further improve the links between China and Africa."
Shanghai Shenhua were the first football club in China to become independent of government control and are majority-owned by local businessman Zhu Jun.
In the past they have signed well-known players including Carsten Jancker and Jorg Albertz.
They play at the Hongkou Stadium, which has a capacity of 35,000.
Zhu Jun believes Drogba's arrival in July will help cement his club on the football map.
He said: "We have been wanting to sign Didier for a while and are very happy that it has finally happened.
"He is an incredible player, who has won so many trophies in his career. We feel that his experience and ability will be a very valuable asset to our squad.
"Shanghai is one of the most influential cities in the world and we are very excited to welcome Didier here."
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