| Cover | Aug. 25, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 25, 2021 |
| Entity File Number | 000-55802 |
| Entity Registrant Name | VISION HYDROGEN CORPORATION |
| Entity Central Index Key | 0001676580 |
| Entity Tax Identification Number | 47-4823945 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 95 Christopher Columbus Drive |
| Entity Address, Address Line Two | 16th Floor |
| Entity Address, City or Town | Jersey City |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07302 |
| City Area Code | (551) |
| Local Phone Number | 298-3600 |
| 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 |
