I am a Moroccan passport holder, what are the requirement to enter in China ?

Yes, you need to apply for a Chinese visa in advance from Chinese embassy in Morocco. For tourism, basic requirements are your passport, application form, photo, return ticket and hotel reservation. Sometimes, bank statement is also required as proof to cover your stay in China. You can refer to http://ma.china-embassy.org/fra/ or contact the embassy consular ofiice directly for more details.