| Document And Entity Information | Apr. 14, 2021 |
| Document Information Line Items | |
| Entity Registrant Name | BioSig Technologies, Inc. |
| Trading Symbol | BSGM |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Central Index Key | 0001530766 |
| Document Period End Date | Apr. 14, 2021 |
| Entity Emerging Growth Company | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38659 |
| Entity Tax Identification Number | 26-4333375 |
| Entity Address, Address Line One | 54 Wilton Road, 2nd Floor |
| Entity Address, City or Town | Westport |
| Entity Address, State or Province | CT |
| Entity Address, Postal Zip Code | 06880 |
| City Area Code | (203) |
| Local Phone Number | 409-5444 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Security Exchange Name | NASDAQ |
