Cover - USD ($)	12 Months Ended
	Mar. 31, 2024	Jun. 14, 2024	Sep. 30, 2023
Cover [Abstract]
Entity Registrant Name	FCCC, INC.
Entity Central Index Key	0000730669
Document Type	10-K
Amendment Flag	false
Entity Voluntary Filers	No
Current Fiscal Year End Date	--03-31
Entity Well Known Seasoned Issuer	No
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Mar. 31, 2024
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2024
Entity Common Stock Shares Outstanding		3,461,022
Entity Public Float			$ 574,912
Document Annual Report	true
Document Transition Report	false
Document Fin Stmt Error Correction Flag	false
Entity File Number	001-08589
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	06-0759497
Entity Address Address Line 1	17800 Castleton St
Entity Address Address Line 2	Suite 695
Entity Address City Or Town	City Of Industry
Entity Address State Or Province	CA
Entity Address Postal Zip Code	91748
City Area Code	917
Icfr Auditor Attestation Flag	true
Auditor Name	OLAYINKA OYEBOLA & CO
Auditor Location	Lagos, Nigeria
Auditor Firm Id	5968
Local Phone Number	624-8888
Entity Interactive Data Current	Yes