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Aimming to investigate the jet flow and the switching technology that form the pulse flow and the anticlogging ability in drip irrigation emitter. Six kinds of sediment particle size segments less than 0.1mm were sorted by screening and organized into three types. Sediment grading combination concentrations were 0.5g/L, 1.0g/L and 1.5g/L, with total inlet pressure of 0.1MPa, and the anticlogging characteristics of the drip irrigation test system under jet tee and tee conditions were analyzed. Results showed that the jet tee can generate pulse amplitude of 27kPa, with oscillating frequency of 236 times/min and pulse current of 0.5g/L and 1.0g/L of sediment graded water with strong anticlogging ability, and the anticlogging ability of 0.03~0.05mm and 0~0.03mm of sediment particle size was more significant, and the anticlogging energy of 0.05~0.10mm of sediment particle size was increased with the increase of concentration. The force showed a weakening trend, and the average number of irrigations of the jet tee test system was 3～8 times more than that under tee conditions. The average test system of the jet tee at different sediment concentrations was relatively moderate, while the flow rate and irrigation uniformity was higher than that under the tee conditions. The pulse water pressure generated by the jet tee was the main reason for the anticlogging ability of the emitter, which was superior than that under the tee conditions.