Abstract: Abstract: The anti-clogging mechanism of pulsed water produced by jet tee in drip irrigation system is unclear. In this study, the influence of pulse wave generated by jet tee on hydraulic and anti-clogging properties was investigated. The flow depth of emitter used by the simulation and test was 1.87 mm, the dentation height was 2.17 mm, the tooth tip distance was 2.07 mm and the corner of runner was 16o. The hydraulic performance test of jet tee was carried out to obtain its pulse parameters (amplitude, period) and to verify the predictions of the computational fluid dynamics (CFD) simulations. The fluctuating pressure with the same pulse frequency as the jet tee was as the pressure inlet boundary condition of CFD. The internal flow of the emitter was described by CFD based on solid-liquid two-phase turbulent model established. The sediment concentration distribution and particles motion path in the emitter channels were obtained by CFD. The waveform produced by the jet tee was similar to the sine wave with the same parameters. A sine wave instead of a jet ternary wave was used for simulation. The relative error between the measured value and the simulated value of the pressure and constant pressure of the jet three-way waveform was samller than 7%. When the inlet water pressure was the same, the average flow rate of the dripper under pulsed water pressure was always smaller than that under constant water pressure. Under the pulse condition, the main flow area and the vortex area of the irrigation channel had pulse performance, and the maximum particle content of the flow channel was lower than 22% under constant pressure. Under the same particle density and different particle size conditions, the particle path in the constant pressure flow was from 1.21% to 26.9%, which was higher than that in the pulse flow. With the increase of particle size, the number of times of the minimum velocity increased, and the instantaneous velocity decreased with the same distance of particle movement. Under the same particle size and different particle density conditions, the particle path in the constant pressure flow was from 3.25% to 9.6%, which was higher than that in the pulse flow. The increase of particle path under the different particle density conditions was smaller than that under the particle size conditions. The comparative analysis above shows that the pulse wave generated by the jet tee would improve the sand-holding ability and anti-blocking performance of the water flow.