Experimental researches on the physical characteristics of rotating liquid are required for collegestudents in the 2lst century.Due to the short of experimental skills ,students usually have experimental errors irthe process of experimental operation, which can affect the measurement accuracies of the gravitationalacceleration in the data processing phase.lt innovatively carried out different types of experimental errors tostudy effects of the deviation angle(a) of the transparent screen from the horizontal orientation , laser verticalincidence point offset( Ax) ,and deviation angle(y) of laser incident light from the vertical direction angle onthe acceleration of gravity measurement.The analysis results show that a deviation angle of 5° of the transparentscreen from the horizontal orientation can lead to a 5.5% error in the acceleration of gravity measurement.Aaser vertical incidence point offset about 5 mm can result in an experimental error of about 12%.Moreover,a16.3% measurement error can be obtained by an incident light deviating 5° from the vertical direction to theleft while the error grows to 22.9% when the laser incident light deviates 5° from the vertical direction to theright. These findings can provide theoretical foundations and teaching tips for teachers in colleges anduniversities to reduce the measurement error of gravity acceleration when guiding students to conductexperiments on rotating liquid characteristics.