| Cover | May 16, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 16, 2024 |
| Entity File Number | 001-41507 |
| Entity Registrant Name | NEXALIN TECHNOLOGY, INC. |
| Entity Central Index Key | 0001527352 |
| Entity Tax Identification Number | 27-5566468 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1776 Yorktown |
| Entity Address, Address Line Two | Suite 550 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77056 |
| City Area Code | (832) |
| Local Phone Number | 260-0222 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Common Stock, par value $0.001 per share | |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | NXL |
| Security Exchange Name | NASDAQ |
| Warrants, each exercisable for one share of Common Stock | |
| Title of 12(b) Security | Warrants, each exercisable for one share of Common Stock |
| Trading Symbol | NXLIW |
| Security Exchange Name | NASDAQ |
