Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 13, 2021
Document Information [Line Items]
Entity Central Index Key	0000922247
Entity Registrant Name	Cyclo Therapeutics, Inc.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	0-25466
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	59-3029743
Entity Address, Address Line One	6714 NW 16th Street, Suite B
Entity Address, City or Town	Gainesville
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32653
City Area Code	386
Local Phone Number	418-8060
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		6,438,172
Warrants To Purchase Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase Common Stock
Trading Symbol	CYTHW
Security Exchange Name	NASDAQ
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $.0001 per share
Trading Symbol	CYTH
Security Exchange Name	NASDAQ