Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 18, 2020
Document And Entity Information
Entity Registrant Name	VANJIA CORP
Entity Central Index Key	0001532383
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	No
Is Entity Emerging Growth Company?	true
Elected Not To Use the Extended Transition Period	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Public Float		$ 60,000
Entity Common Stock, Shares Outstanding		6,000,000
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2019
Entity Shell Company	false
Entity Interactive Data	No