| Document and Entity Information | Jan. 28, 2025 |
| Entity Listings [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 28, 2025 |
| Entity File Number | 001-42253 |
| Entity Registrant Name | Silexion Therapeutics Corp |
| Entity Central Index Key | 0002022416 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Address, Address Line One | 12 Abba Hillel Road |
| Entity Address, City or Town | Ramat-Gan |
| Entity Address, Country | IL |
| Entity Address, Postal Zip Code | 5250606 |
| City Area Code | 972 |
| Local Phone Number | 8-6286005 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Ordinary Shares, par value $0.0001 per share [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Ordinary Shares, par value $0.0009 per share |
| Trading Symbol | SLXN |
| Security Exchange Name | NASDAQ |
| Warrants exercisable for Ordinary Shares at an exercise price of $11.50 per share [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Warrants exercisable for Ordinary Shares at an exercise price of $103.50 per share |
| Trading Symbol | SLXNW |
| Security Exchange Name | NASDAQ |
