Document and Entity Information - shares	9 Months Ended
	Feb. 28, 2021	Mar. 31, 2021
Cover [Abstract]
Entity Registrant Name	AEHR TEST SYSTEMS
Entity Central Index Key	0001040470
Document Type	10-Q
Document Period End Date	Feb. 28, 2021
Amendment Flag	false
Current Fiscal Year End Date	--05-31
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	CA
Entity File Number	000-22893
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 Common Stock, Shares Outstanding		23,597,730
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021