Thanks for your reply,
Yes,I have put chip into UART bootloder mode ,and I upload .hex file into chip success with other tool, but it is not work on "PlatformlO uplode mode ", also you can tell me how to generate .hex by PlatformlO
Auto-detected: COM4
Uploading .pioenvs\genericSTM32F103ZE\firmware.bin
stm32flash 0.4Failed to init device.