| Cover | Oct. 06, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 6, 2021 |
| Entity File Number | 001-12934 |
| Entity Registrant Name | ImmuCell Corporation |
| Entity Central Index Key | 0000811641 |
| Entity Tax Identification Number | 01-0382980 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 56 Evergreen Drive |
| Entity Address, City or Town | Portland |
| Entity Address, State or Province | ME |
| Entity Address, Postal Zip Code | 04103 |
| City Area Code | 207 |
| Local Phone Number | 878-2770 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
