Document and Entity Information - USD ($)	12 Months Ended
	May 31, 2021	Jul. 31, 2021	Nov. 30, 2020
Cover [Abstract]
Entity Registrant Name	AEHR TEST SYSTEMS
Entity Central Index Key	0001040470
Document Type	10-K
Document Period End Date	May 31, 2021
Amendment Flag	false
Current Fiscal Year End Date	--05-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	CA
Entity File Number	000-22893
Entity Public Float			$ 34,124,251
Entity Common Stock, Shares Outstanding		24,168,522
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021