Abstract: Objective To study the clinical classification diagnosis of angle-closure glaucoma and its reference value for clinical treatment. Methods A total of 120 patients with angle-closure glaucoma admitted to our hospital from May 2016 to May 2018 were studied. According to the disease status, they were divided into acute group (pre-clinical A1 group and A2 remission period) and chronic group (early B1 disease, B2 progress period), and selected 60 healthy people who were admitted to the hospital for the same period as the healthy control group, the eyes of the enrolled subjects were examined, and the intraocular pressure of the patients was measured. Because the difference in eye pressure of glaucoma patients between day and night was relatively large，the time points were selected to measure at 5 o'clock 、14 o'clock and 22 o'clock respectively. The anterior segment of the patient's eye was examined using a slit lamp. The patient's field of vision was examined using a Humphrey field of view analyzer. The patient's refractive, fundus, and UBM angle were directly examined. By comparing ACW (anterior chamber width), AOD (angle opening distance), TISA (trabecular iris space area), CLR (crystalline lens rise), and IT (iris thickness) and other data, analysis of clinical scores Type and its clinical reference value. Results AOD, TISA and ACW in both acute and chronic groups were lower than those in the control group (all P<0.05), and CLR and IT in both acute and chronic groups were higher than those in the control group (all P<0.05). AOD and TISA were lower in A2 group than A1 group (all P<0.05), CLR and IT were higher in A2 group than A1 group (all P<0.05), AOD and TISA were lower in B2 group than B1 group (all P<0.05), CLR and IT were higher in B2 group than B1 group (P<0.05), AOD and TISA were higher in B2 group than A2 group (all P<0.05), and CLR and IT were lower in B2 group than A2 group (all P<0.05). Conclusion Through the analysis of different types of glaucoma eyes front section parameters, found eyes front section parameters have differences between acute stage glaucoma and chronic glaucoma， and acute stage glaucoma and chronic glaucoma eyes section parameter change is more obvious, is one of the most severe episodes of acute glaucoma, effective classification diagnosis more conducive to the choice of treatment and operation.