Objective To analyze the influence of pre-preparation quality evaluation on the effect of ultrasound examination. Methods According to the digital table method, 150 patients were randomly divided into the control group and the experimental group, 75 cases in the control group and the experimental group each. The two groups were taken the ultrasound examination, and the ultrasound examination was completed according to the preparation requirements. The patients in the experimental group were evaluated before the examination, and the inspection notes were timely implemented. Results Knowledge of pre preparation, preparation quality before examination, and rate of check on time were lower in the control group than that in the experimental group(P<0.05). The control group was lower than the experimental group(P<0.05). Conclusion The preparation quality evaluation before examination may promote the patient's preparation before the ultrasonic examination, improve the preparation compliance and knowledge awareness, shorten the waiting time, and improve the quality of preparation and the satisfaction of patient service.