  It has been ten years since the first report for a positive strangeness
pentaquark-like baryon state. However the existence of the pentaquark state is
still controversial. Some contradictions between the experiments are unsolved.
In this paper we review the experimental search for the pentaquark candidates
$\Theta^+$, $\Theta^{++}$, $\Xi^{--}$, $\Theta_c^0$ and $N^*$ in details. We
review the experiments with positive results and compare the experiments with
similar conditions but opposite results.
