Why does the EU need Turkey to stop refugees instead of itself?

Because most refugees illegally entered the EU from Turkey by renting ships.

After the Arab Spring broke out at the end of 20 10, refugees or economic migrants from the Middle East, Africa and Asia (mainly from Syria, Afghanistan and Eritrea) sought to settle in EU countries via the Mediterranean and the Balkans.

The Republic of Turkey borders the Black Sea to the north, the Mediterranean Sea to the south, Syria and Iraq to the southeast, the Aegean Sea to the west, Greece and Bulgaria to the east, Georgia, Armenia, Azerbaijan and Iran to the east. Turkey's geographical location and geopolitical strategic significance are extremely important, and it is a crossroads connecting Europe and Asia.

The main source of refugee flows in Europe is refugees from the Islamic world. The Middle East War launched by the United States and the chaos in Georgia and Syria under the influence of Russia directly led to chaos in this region for 20 years.

Due to the turbulent social environment caused by the war, most countries where refugees live have experienced economic and social problems, and social order has been completely destroyed. Both riots and extremist organizations are spreading in various countries, and staying in one's own country is always life-threatening, not to mention social problems such as old-age security and education for future generations.

Baidu Encyclopedia-European Refugee Crisis

Baidu Encyclopedia-Turkey (Trans-Eurasian Countries)