I am from Yemen I live in china for 2 year study in Shenzhen. How can I get visa to Bangladesh?

To apply for the Bangladesh visa for 1-2 months stay, you need to submit the following documents:
1. Duly filled in Bangladesh Visa Application Form;
2. Passport size recent photographs with white background- two copies;
3. Passport with minimum six months validity.
4. Letter of Invitation / Sponsorship from any local Bangladeshi company or recognized Bangladeshi business organization or letter of recommendation from any recognized Chambers of Commerce and Industry of the concerned country for a business visa;
5. Letter of Recommendation explaining condition of appointment from concerned Ministry / BOI / BEPZA of Bangladesh for an Employment Visa;
6. If refused, you can try to apply for a Tourist visa with Letter of Invitation from any Bangladeshi tourist operator or any Chinese tourist operator.

The Embassy of Bangladesh in China is located in Beijing, if you cannot apply in person, you can apply by Postal Service. You may send visa application, money receipt of visa fee and other relevant documents by EMS. The passports after endorsing necessary visas would be returned to the applicants by return EMS. In this case additional RMB 22 would be included with the Visa Fee. Applicants are advised to send money through postal service in favour of Passport Section, Embassy of Bangladesh, 42 Guang Hua Lu, Beijing, China.

Urgent visas are processed and delivered on the same day of receiving visa applications;
Ordinary visas are processed and delivered on the following day of receiving visa applications;
The visa applications which are received by postal service (EMS) are also processed and posted to the nearest Post Office by return EMS on the following day of receiving EMS.