The invention discloses a device for obtaining feeding capacity in the paving process and a paving speed feedback method. The device is characterized by comprising a carrier (2), an identification unit (4), a write-in unit (6), a counting unit (8), a weighing unit (10), a processor (12) and a communication unit. By the adoption of the device and the paving method, the phenomenon that the device is stopped and waits for materials in the paving operation process can be practically avoided, the production efficiency is improved, the problems that flatness is poor and compactness is insufficient due to the paving halt are solved, the engineering construction management level can be effectively improved, and the engineering construction quality is guaranteed.