| Document and Entity Information | Mar. 09, 2022 |
| Entity Listings [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 9, 2022 |
| Entity Registrant Name | Chemomab Therapeutics Ltd. |
| Entity Incorporation, State or Country Code | L3 |
| Entity File Number | 001-38807 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Address, Address Line One | Kiryat Atidim, Building 7 |
| Entity Address, City or Town | Tel Aviv |
| Entity Address, Country | IL |
| Entity Address, Postal Zip Code | 6158002 |
| City Area Code | 972 |
| Local Phone Number | 77-331-0156 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001534248 |
| American Depositary Shares, each representing twenty (20) ordinary shares, no par value per share [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | American Depositary Shares, each representing twenty (20) ordinary shares, no par value per share |
| Trading Symbol | CMMB |
| Security Exchange Name | NASDAQ |
| Ordinary shares, no par value per share [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Ordinary shares, no par value per share |
| Trading Symbol | N/A |
| Security Exchange Name | NASDAQ |
