NHS England says that 236 patients out of 307 nationwide (76.9%) requiring urgent referrals were given treatment within a week from December 2017 to January 2018.
It compares with 155 patients out of 239 (64.9%) in January 2016 seen within a week.
Routine cases also saw reduced waiting times, 1,238 out of 1,489 patients (83.1%) started treatment within four weeks compared with 596 from 915 (65.1%) from January 2016.
NHS figures involved cases of patients aged up to 19 years of age.
However, concerns have been raised as the number of eating disorder cases among children and young people has risen from 1,154 to 1,796 (55%) since 2016.