What visa do I need to apply for studying in other EU countries and internship in Germany?

An internship in Germany requires a German business visa.

German business visa is the most issued visa in Germany every year, mainly for foreigners who want to enter Germany for short-term business activities. Because the German business visa does not need to be applied to the Immigration Bureau in advance, and the required materials are relatively simple, people who want to enter Germany for short-term business activities or business visits will generally choose this kind of visa first.