Understanding the effects of simulated N deposition on temperature sensitivity of soil respiration (Q_(10)) can reduce the uncertainty in the assessment of soil carbon budget under global change scenarios.In this study,60 literatures on the effects of simulated N deposition on Q_(10) in China's terrestrial ecosystems were investigated by meta analysis.The results showed that the effects of simulated N deposition on Q_(10) were not significant (0.49%).Nitrogen deposition had negative effects on Q_(10) in the plateau climate zone (16.32%) and positive effects on that in marsh(38.19%).The effect size was related to the dosage of simulated N deposition.When simulated N deposition dosage was less than 50 kg·hm~(-2)·a~(-1),Q_(10) increased by 2.59%;when the dosage was 50-150 kg·hm~(-2)·a~(-1) and greater than 150 kg·hm~(-2)·a~(-1),Q_(10) decreased by 4.33% and 1.61%,respectively.The deposited nitrate nitrogen significantly increased Q_(10)(34.33%),while urea application significantly decreased Q_(10)(8.11%).Moreover,simulated N deposition with a duration over 15 months significantly reduced Q_(10)(19.24%).The alteration of Q_(10) by simulated N deposition may be due to the alteration of the metabolism of roots and soil microbes.