The purpose of this paper is to study pointwise bi-slant submanifolds of trans-Sasakian manifold. Firstly, we obtain a non-trivial example of a pointwise bi-slant submanifolds of an almost contact metric manifold. Next we provide some fundamental results, including a characterization for warped product pointwise bi-slant submanifolds in trans-Sasakian manifold. Then we establish that there does not exist warped product pointwise bi-slant submanifold of trans-Sasakian manifold under some certain considerations. Next, we consider that is a proper pointwise bi-slant submanifold of a trans-Sasakian manifold with pointwise slant distrbutions and , then using Hiepko’s Theorem, becomes a locally warped product submanifold of the form , where and are pointwise slant submanifolds with the slant angles and respectively. Later, we show that pointwise bi-slant submanifolds of trans-Sasakian manifold become Einstein manifolds admitting Ricci soliton and gradient Ricci soliton under some certain conditions..