Abstract: 【 Objective 】 A field experiment was conducted to study the effects of loss-control urea and common urea different application proportion on plant dry matters, nitrogen uptake and yield of processing tomato'Tunhe 9'.【 Method 】Eight treatments were designed,including CK(N 0 kg/hm²),common urea (N 240 kg/hm²), loss-control urea (N 240 kg/hm²), 80% loss-control urea (N 192 kg/hm²), 70% loss-control urea (N 168 kg/hm²),70% loss-control urea + 30% common urea (total N 240 kg/hm²), 50% loss-control urea + 50%common urea (total of N 240 kg/hm²),30% loss-control urea + 70%common urea(total of N 240 kg/hm²) to research the effects of loss-control urea and common urea on accumulation rate for plant dry matters, nitrogen uptake and yield of processing tomato.【 Result 】The results showed that compared with conventional urea, the application of 70% loss-control urea + 30% common urea and 50% loss-control urea + 50% common urea could significantly increase the plant dry matters and nitrogen uptake, and fertilizer nitrogen use efficiency was increased by 12.28 and 9.05 percentage point, respectively; the biomass and yield between 80% loss-control urea and common urea treatments showed no significant difference,but the fertilizer nitrogen use efficiency increased by 11.94 percentage point. the application of 70% loss-control urea + 30%common urea and 50% loss-control urea + 50% common urea significantly increased the yield of processing tomato, respectively by 12.99% and 5.38%; Compared to the loss-control urea and common urea treatments, the application of loss-control urea could significantly increase the color difference,but the treatments had no effects on soluble solids, pH value and the total acidity.【 Conclusion 】The application rate of controlled urea and loss-control urea combined with common urea increased the utilization rate of nitrogen in processing tomato, but the application of 70% loss-control urea + 30% common urea treatment is the best.