  Let $\mathcal{R}$ be a finite valuation ring of order $q^r$. In this paper,
we prove that for any quadratic polynomial $f(x,y,z) \in \mathcal{R}[x,y,z]$
that is of the form $axy+R(x)+S(y)+T(z)$ for some one-variable polynomials $R,
S , T$, we have \[ |f(A,B,C)| \gg \min\left\{ q^r,
\frac{|A||B||C|}{q^{2r-1}}\right\}\] for any $A, B, C \subset \mathcal{R}$. We
also study the sum-product type problems over finite valuation ring
$\mathcal{R}.$ More precisely, we show that for any $A \subset \mathcal{R}$
with $|A| \gg q^{r-1/3}$ then $$\max\{ |A \cdot A|, |A^d + A^d|\},\max\{ |A +
A|, |A^2 + A^2|\},\max\{|A-A|,|AA+AA|\} \gg |A|^{2/3}q^{r/3},$$ and $|f(A) + A|
\gg |A|^{2/3}q^{r/3}$ for any one variable quadratic polynomial $f$.
