Cover - shares	3 Months Ended
	Aug. 31, 2021	Sep. 30, 2021
Cover [Abstract]
Entity Registrant Name	AEHR TEST SYSTEMS
Entity Central Index Key	0001040470
Document Type	10-Q
Amendment Flag	false
Current Fiscal Year End Date	--05-31
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Aug. 31, 2021
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2021
Entity Common Stock Shares Outstanding		26,557,065
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	000-22893
Entity Incorporation State Country Code	CA
Entity Tax Identification Number	94-2424084
Entity Address Address Line 1	400 Kato Terrace
Entity Address State Or Province	CA
Entity Address Postal Zip Code	94539
City Area Code	510
Local Phone Number	623-9400
Trading Symbol	AEHR
Entity Interactive Data Current	Yes
Entity Address City Or Town	Fremont
Security 12b Title	Common Stock Par value $0.01 per share
Security Exchange Name	NASDAQ