In this paper, we study inverse source for diffusion equation with conformable derivative:
\[
C_{0}D_{t}^{(\gamma)}u – \Delta u = \Phi(t)\mathcal{F}(x)
\quad \text{where } 0 < \gamma < 1, \ (x,t) \in \Omega \times (0,T).
\]

We survey the following issues: The error estimate between the sought solution and the regularized solution under a priori parameter choice rule; The error estimate between the sought solution and the regularized solution under a posteriori parameter choice rule; Regularization and $\mathcal{L}_{p}$ estimate by Truncation method.