Abstract: To clarify the appropriate nitrogen fertilizer application rate for cabbage, a field plot experiment was conducted with four treatments: no nitrogen fertilizer（T1, control）, optimized nitrogen application（T2）, 70% of optimized nitrogen application（T3）, and 130% of optimized nitrogen application（T4）. The T2 treatment applied pure N 240 kg·hm⁻², P₂O₅ 84 kg·hm⁻² and K₂O 216 kg·hm⁻². The study aimed to investigate the effects of different nitrogen fertilizer applications on the agronomic traits, fresh yield of cabbage, nitrogen, phosphorus and potassium absorption, as well as the soil chemical properties after harvest. The results showed that compared the T1 treatment, the other fertilization treatments increased the plant height, stem diameter, and fresh weight of the cabbage to some extent. The T2 treatment showed the best performance in terms of agronomic traits, nitrogen and potassium absorption, and fresh yield. Therefore, the recommended nitrogen fertilizer application for cabbage was pure N 240 kg·hm⁻², which can provide a reference for scientific fertilization of cabbage.