In this paper, we study the following generalized quasilinear
Schrödinger equation
−
div
(
g
2
(
u
)
∇
u
)
+
g
(
u
)
g
′
(
u
)
|
∇
u
|
2
+
V
(
x
)
u
=
λ
f
(
x
,
u
)
+
h
(
x
,
u
)
,
x
∈
R
N
,
where
λ
>
0
,
N
≥
3
,
g
∈
C
1
(
R
,
R
+
)
. By using a change of
variable, we obtain the existence of positive solutions for this problem
with concave and convex nonlinearities via the Mountain Pass Theorem. Our
results generalize some existing results.