Hello haifeng jin,
Yes, as sean said, you need Professional license.
Do you still have question about this?
Hello
Starting with Keil MDK 5.31, a MDK Pro license will not be needed for Armv8-M (Cortex-M23, M33, and so on).
Other versions of MDK will work with these TrustZone processors.
Even MDK-Lite (the evaluation version) will work to 32K.
MDK 5.31 is expected to be released early July 2020.
I just updated my LPC55S69 lab: www.keil.com/appnotes/docs/apnt_322.asp