Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 14, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Cleantech Solutions International, Inc.,
Entity Central Index Key	0000819926
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		3,943,986