| Cover | Jul. 07, 2023 |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | This Form 8-K/A is being filed to correct certain scrivener’s errors with respect to the number of shares of Class A common stock in Item 8.01 of the Form 8-K that was originally filed with the SEC on July 10, 2023 (the “Original Form 8-K”). This Form 8-K/A includes appropriate corrections to the disclosure in Item 8.01 of the Original Form 8-K as it should have been filed, as set forth below. No other changes have been made to the Original Form 8-K and the other items included in the Original Form 8-K have not been repeated in this amendment. |
| Document Period End Date | Jul. 07, 2023 |
| Entity File Number | 001-40877 |
| Entity Registrant Name | PHOENIX BIOTECH ACQUISITION CORP. |
| Entity Central Index Key | 0001870404 |
| Entity Tax Identification Number | 87-1088814 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2201 Broadway |
| Entity Address, Address Line Two | Suite 705 |
| Entity Address, City or Town | Oakland |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94612 |
| City Area Code | (215) |
| Local Phone Number | 731-9450 |
| 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, each consisting of one share of Class A common stock and one-half of one redeemable warrant | |
| Title of 12(b) Security | Units, each consisting of one share of Class A common stock and one-half of one redeemable warrant |
| Trading Symbol | PBAXU |
| Security Exchange Name | NASDAQ |
| Class A common stock, par value $0.0001 per share | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | PBAX |
| Security Exchange Name | NASDAQ |
| Warrants, each whole warrant exercisable for one share of Class A common stock | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Class A common stock |
| Trading Symbol | PBAXW |
| Security Exchange Name | NASDAQ |
