Spokesman Chris Goodman said the 27-year-old will stay at the clinic on "doctor's advice," but it was not clear what treatment she will get at the Priory Clinic. The center offers treatment for a range of psychiatric problems as well as drug and alcohol addiction.
Goodman said Winehouse wants to be sure she's ready to perform in Europe this summer.
Winehouse's breakthrough disc, 2006's "Back to Black," won her five Grammy Awards and helped her achieve worldwide stardom, but her music has been overshadowed by drug use and legal run-ins.
Winehouse has not released much music since, but she performed a short tour in Brazil in January.
The Associated Press contributed to this report.