People who come into close contact with a person with Covid now only have to test on day 1 and 7, or when they start showing symptoms, authorities have said.
Previously people had to take a PCR test for five consecutive days.
The new close contact rule, which came into force on Friday, was announced by the National Emergency Crisis and Disasters Management Authority (Ncema) on Wam, the UAE's news agency.
Each emirate has the freedom to set its own rules and in Dubai close contacts of positive cases who are not experiencing any symptoms do not have to take a PCR test.
The UAE has seen a steady decline in the number of new cases being reported each day.
Health authorities announced 347 new Covid-19 cases on Friday, with no deaths reported for the 18th consecutive day.