after doing ba in psychology what field in mba should i persue???

you can go for MBA. For MBA, You should have cleared any one entrance test (such as CAT/MAT/XAT/NMAT/CMAT/GMAT/

NEST ) accepted by various colleges and you should also have minimum of 45% to 55% in your bachelors(any stream) for admission in the same. Admission in MBA is done via two modes- either through an entrance exam or direct admission which is based on merit basis or management quota basis.
MBA Specialization, which are as follows:Oil and Gas Management
Hospital and Healthcare Management,
Supply Chain and Logistics,
Tourism and Hospitality,
Financial Markets,
Finance,
Marketing,
Human Resources,
Business ,Operations,
Information Technology,
Retail Management,
Strategy,
Entrepreneurship,
Business Analytics,
E-Commerce,

you can go for MBA- HR.  For MBA, You should have cleared any one entrance test (such as CAT/MAT/XAT/NMAT/CMAT/GMAT/

NEST ) accepted by various colleges and you should also have minimum of 45% to 55% in your bachelors(any stream) for admission in the same. Admission in MBA is done via two modes- either through an entrance exam or direct admission which is based on merit basis or management quota basis.
MBA Specialization, which are as follows:Oil and Gas Management
Hospital and Healthcare Management,
Supply Chain and Logistics,
Tourism and Hospitality,
Financial Markets,
Finance,
Marketing,
Human Resources,
Business ,Operations,
Information Technology,
Retail Management,
Strategy,
Entrepreneurship,
Business Analytics,
E-Commerce,

If you want to pursue an MBA specialisation which is related to the domain of your undergraduate degree, then you should go for an HR specialisation. But in my opinion, more than anything, it depends on your area of interest.

Think about it and make a wise choice.

All the best!

Pragya (IIM Jammu PGP 2018-20)