The length of studying in Germany depends on the degree and course you choose. Generally speaking, it takes 3-4 years for undergraduate, 1-2 years for master and 3-5 years for doctor. The following are the general conditions for applying for studying in Germany:

1. Education requirements: Generally, you need to have a degree equivalent to a German university, such as a high school diploma or an undergraduate degree certificate. Specific requirements may vary from major to school.

2. Language requirements: Most courses in Germany are taught in German, so it is necessary to provide proof of German proficiency, such as TestDaF or DSH test scores. Some schools and courses also accept English teaching and need to provide proof of English proficiency, such as TOEFL or IELTS scores.

3. Performance requirements: Good academic performance is usually required, especially in highly competitive majors and schools.

4. Letter of recommendation: You need to provide a letter of recommendation from your teacher or employer to prove your academic ability or work experience.

5. Personal statement: You need to write a personal statement, introducing your academic background, research interests and why you chose to study in Germany.

6. Visa requirements: If you plan to study in Germany for more than 90 days, you need to apply for a German student visa. Visa requirements include proof of funds, health insurance and acceptance of school certificates.

Please note that the specific application conditions may vary according to different schools and majors. It is recommended that you read the official website carefully or contact the Admissions Office before applying for the most accurate and up-to-date information.