Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Aug. 27, 2021
Document Information Line Items
Entity Registrant Name	SHARING ECONOMY INTERNATIONAL INC.
Trading Symbol	SEII
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		239,278,847
Amendment Flag	false
Entity Central Index Key	0000819926
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-34591
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	90-0648920
Entity Address, Address Line One	No.85 Castle Peak Road
Entity Address, Address Line Two	Castle Peak Bay
Entity Address, Address Line Three	Tuen Mun
Entity Address, City or Town	N.T.
Entity Address, Country	HK
City Area Code	(852)
Local Phone Number	3583 2186
Entity Interactive Data Current	Yes
Entity Address, Postal Zip Code	00000
Security Exchange Name	NONE
Title of 12(b) Security	N/A