I have converted NSMutable data into string but I want this data into dictionary. From 8 days I tried to solve this but i m stuck on this. Please help me about this. I got following response from server .<227b5c22 50617274c 222c5c22 436f6e73 756c7461 6e745c22 2c5c2243 6f756e73 656c5c22 2c5c2243 50415c22 2c5c224c 656e6465 725c225d 7d22> Then I had convert this data into string using utf8 encoding like this. Optional("\"{\\"AAA\\":[\\"BBB\\",\\"CCC DDD\\",\\"EEE\\",\\"FFF \\"GGG\\"]}\"") But after that unable to convert it into dictionary.