Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 07, 2020
Cover [Abstract]
Entity Registrant Name	Tottenham Acquisition I Ltd
Entity Central Index Key	0001731176
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity's Reporting Status Current?	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		3,710,386
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
Entity Emerging Growth Company	true
Entity Small Business	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Interactive data current	Yes
Entity File Number	001-38614
Entity Incorporation State	D8