Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 11, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	SHARING ECONOMY INTERNATIONAL INC.
Entity Central Index Key	0000819926
Trading Symbol	SEII
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		4,884,325