v3.10.0.1
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2018
Aug. 07, 2018
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2  
Trading Symbol ACMR  
Entity Registrant Name ACM RESEARCH, INC.  
Entity Central Index Key 0001680062  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Common Class A [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   13,963,257
Common Class B [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   1,918,423