| Cover | Apr. 23, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 23, 2024 |
| Entity File Number | 000-56182 |
| Entity Registrant Name | LANDBAY INC |
| Entity Central Index Key | 0001672572 |
| Entity Tax Identification Number | 81-1260549 |
| Entity Incorporation, State or Country Code | NY |
| Entity Address, Address Line One | Xixi B2 |
| Entity Address, Address Line Two | the first energy-saving Xixi in Xihu District |
| Entity Address, City or Town | Hangzhou City |
| Entity Address, Country | CN |
| Entity Address, Postal Zip Code | 310061 |
| City Area Code | +86 |
| Local Phone Number | 18621851468 |
| 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 |
