One volcano eruption model is arranged to improve efficiency of education, enters volcano eruption model by insertion mixed solution and brightly models volcano eruption. One volcano eruption model includes a volcano cross-section model (2), is contracted by from a true volcano and is made of a synthetic resin. Mixed solution container jack (3,4) is formed in the both sides of volcano eruption model. A solution container (6) and lava outburst hole (5) are coupled with insertion hole. One lava guide groove is formed in the surface of volcano cross-section model, so that the solution of outburst is prevented from being ejected to outside. Volcano cross-section model is maintained at a retainer. One stepped portion (9) prevents lava-solution from leaking out from retainer.
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