Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 13, 2019	Jun. 30, 2018
Document And Entity Information
Entity Registrant Name	Tottenham Acquisition I Ltd
Entity Central Index Key	0001731176
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity's Reporting Status Current?	No
Entity Filer Category	Non-accelerated Filer
Entity Public Float			$ 0
Entity Common Stock, Shares Outstanding		5,965,000
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2018
Entity Emerging Growth Company	true
Entity Small Business	true
Entity Ex Transition Period	false
Entity Well Known Seasoned Issuer	No
Entity Voluntary Filer	No
Entity Shell Company	false