Insider Trading Arrangements	3 Months Ended	6 Months Ended
	Jun. 30, 2023 shares	Jun. 30, 2023 shares
Fuping Chen [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On May 12, 2023, Fuping Chen, Vice President, Sales—China of ACM Research (Shanghai), Inc., adopted a Rule 10b5-1 trading arrangement (the “Chen Plan”) that is intended to satisfy the affirmative defense of Rule 10b5-1(c) of the Exchange Act. The Chen Plan allows for the contemporaneous exercise of options and sale of up to 105,000 shares of Class A Common Stock, at specific market prices, commencing on August 11, 2023, and continuing until (i) all such options are exercised and the underlying shares are sold, (ii) March 8, 2024, or (iii) such date that the Chen Plan is otherwise terminated according to its terms, whichever comes first.
Name	Fuping Chen
Title	Vice President, Sales—China of ACM Research (Shanghai), Inc.
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	May 12, 2023
Arrangement Duration	210 days
Aggregate Available	105,000	105,000
Haiping Dun [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On May 17, 2023, Haiping Dun, a member of the Board of Directors of the Company, adopted a Rule 10b5-1 trading arrangement (the “Dun Plan”) that is intended to satisfy the affirmative defense of Rule 10b5-1(c) of the Exchange Act. The Dun Plan allows for the contemporaneous exercise of options and sale of up to 235,531 shares of Class A Common Stock, at specific market prices, commencing on August 22, 2023, and continuing until (i) all such options are exercised and the underlying shares are sold, (ii) April 30, 2025, or (iii) such date that the Dun Plan is otherwise terminated according to its terms, whichever comes first. The options were granted in May 2015 with a ten-year expiration date.
Name	Haiping Dun
Title	member of the Board of Directors
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	May 17, 2023
Arrangement Duration	617 days
Aggregate Available	235,531	235,531
David Wang [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On June 13, 2023, David Wang, President and Chief Executive Officer of the Company, adopted a Rule 10b5-1 trading arrangement (the “Wang Plan”) that is intended to satisfy the affirmative defense of Rule 10b5-1(c) of the Exchange Act. The Wang Plan allows for the contemporaneous exercise of options and sale of up to 720,000 shares of Class A Common Stock, at specific market prices, commencing on September 12, 2023, and continuing until (i) all such options are exercised and the underlying shares are sold, (ii) June 13, 2024, or (iii) such date that the Wang Plan is otherwise terminated according to its terms, whichever comes first. The options were granted in May 2015 with a ten-year expiration date.
Name	David Wang
Title	President and Chief Executive Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	June 13, 2023
Arrangement Duration	275 days
Aggregate Available	720,000	720,000