Hollow insert anti-deformation die-casting system and die-casting method

The hollow insert anti-deformation die-casting system comprises a die-casting die, a hollow insert and a hydraulic machine, the die-casting die is provided with a supporting column used for positioning the hollow insert, and the two ends of the hollow insert extend out of the die-casting die and are connected with oil supply pipes; the oil supply pipe is connected with the hydraulic machine, the hydraulic machine is used for introducing hot oil with preset pressure into the hollow insert in the die-casting process, a punch is arranged on the die-casting die, a pressure sensor is arranged on the punch, and the pressure sensor is used for feeding back pressure so as to control the pressure of the hot oil output by the hydraulic machine. The die-casting die has the beneficial effects that the die-casting quality of the hollow insert in an aluminum alloy casting is remarkably improved, the insert cannot deform and shift in the die-casting process, and the problem that die-casting of the hollow insert is difficult