Effectively carrying out extracurricular experiments of “university computer foundation” course is an inevitable requirement for strict training according to the syllabus. On the basis of reconstructing the curriculum experiment system, five specific contents are designed, including the teaching objective, content system, teaching environment, teaching implementation and whole-course assessment. Through the three-stage teaching practice in our university, good expected results have been achieved, which has important reference value and reference significance for military academies to carry out extracurricular experiments.