Based on quality problem of vibrator casting products, the characteristics of casting was analyzed. Aiming at the defects of dispersed shrinkage, shrinkage cavity, cracks and so on, in the trial of casting, design of the die was improved, feeding channels were added, preheating temperature of inserts was optimized, parameters of injection were adjusted, time of pressure preservation was prolonged, the hanging problem of mosaic pieces was solved by the suction of the magnet. Results showed that these technological measures were beneficial to the improvement of product quality，and the qualified rate of casting could reach 90%.