Objective To investigate the feasibility of LAMP detection in Pneumocystis carinii pneumonia rats and the changes of 1, 3-β-D-glucan.Methods 40 Wister rats were randomly divided into control group and lung infection group, 20 rats in each group.Specific primers were designed for pneumoniae carinii and LAMP technique was carried out to identify whether the rats were infected or not.The levels of 1, 3-β-D-glucan in peripheral blood and lung lavage fluid were detected by ELISA.Results Compared with the control group, there were 4 dead rats in the lung infection group, the body weight decreased significantly, and the lung weight and the percentage of the lung volume increased significantly (P＜0.05).LAMP method can detect Pneumocystis carinii, the control group was negative.Compared with the control group, the level of 1, 3-β-D-glucan in peripheral blood and lung lavage fluid in the lung infection group increased.And the 1, 3-β-D-glucan level in lung lavage fluid was higher than that in peripheral blood (P＜0.05).Conclusion In this study, we successfully constructed a rat model of Pneumocystis carinii pneumonia and established a simple and rapid method for LAMP detection of Pneumocystis carinii.1, 3-β-D-glucan and Pneumocystis carinii have some relevance.