| Cover | Aug. 08, 2022 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 08, 2022 |
| Entity File Number | 001-40730 |
| Entity Registrant Name | Chardan NexTech Acquisition 2 Corp. |
| Entity Central Index Key | 0001847986 |
| Entity Tax Identification Number | 85-1873463 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 17 State Street |
| Entity Address, Address Line Two | 21st Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10004 |
| City Area Code | 646 |
| Local Phone Number | 465-9000 |
| Written Communications | true |
| 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 |
| Units, consisting of one share of Common Stock, $0.0001 par value per share, and three-quarters of one Redeemable Warrant | |
| Title of 12(b) Security | Units, each consisting of one share of Common Stock, $0.0001 par value, and three-quarters of one Redeemable Warrant |
| Trading Symbol | CNTQU |
| Security Exchange Name | NASDAQ |
| Common Stock [Member] | |
| Title of 12(b) Security | Common Stock, par value $0.0001 per share, included as part of the Units |
| Trading Symbol | CNTQ |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants included as part of the Units, each exercisable for one share of Common Stock for $11.50 per share | |
| Title of 12(b) Security | Redeemable Warrants included as part of the Units, each exercisable for one share of Common Stock for $11.50 per share |
| Trading Symbol | CNTQW |
| Security Exchange Name | NASDAQ |
