A single polymer chain in solvent confined in a slit formed by two parallel plates is studied by using molecular dynamics simulation method. The square radii of gyration and diffusion behaviors of polymers are greatly affected by the distance between the two plates

but they do not follow the same way. The chain size decays drastically with increasing

h

(

h

is the distance between two plates)

until a basin occurs

and a universal

h

/

<

R

g

>

0

dependence for polymer chains with different degrees of polymerization can be obtained. While

for the chain's diffusion coefficient

it decays monotonously and there is no such basin-like behavior. Furthermore

we studied the radial distribution function of confined polymer chains to explain the reason why there is a difference for the decay behaviors between dynamic properties and static properties. Besides

we also give the degree of confinement dependence of the static scaling exponent for a single polymer chain. Our work provides an efficient way to estimate the dynamics and static properties of confined polymer chains

and also helps us to understand the behavior of polymer chains under confinement.