A filed experiment was carried out to evaluate effects of calcium-magnesia phosphate fertilizer application rate on maize yield and its cadmium accumulationin in representative red soil of Guangxi province. Phosphate fertilizer with 0.0651 mg Cd/kg was applied at five rates (0, 75, 150, 300 and 600 kg P₂O₅/hm²). In comparison with CK, phosphate fertilizer significantly increased the grain yield by 8.2%-13.1% for spring maize and 13.7%-20.0% for autumn maize, and the straw biomass of spring maize increased by 11.4% under high phosphate treatment (600 kg P₂O₅/hm²). Phosphate fertilization decreased Cd contents in straw by 2.7%-45.8%and 11.0%-43.6%, while decreased Cd contents in grain by 13.0%-40.6% and 9.9%-31.5% for spring and autumn maize, respectively. Moreover, the Cd concentration and accumulationin in straw and grain decreased with the increasing phosphate fertilizer. Compared with low phosphate treatments (75-300 kg P₂O₅/hm²), the Cd accumulation in straw and grain under high phosphate treatment (600 kg P₂O₅/hm²) reduced by 13.6%-41.5% and 8.8%-29.3%, respectively. Correlation analysis showed that there was a negative linear relationship between Cd concentration in maize and soil pH, but positive linear relationship between Cd concentration and soil available Cd. High phosphate fertilizer could reduce the Cd phytoavailability, thus attributed to the lower Cd accumulation in maize.