Asian stock markets are trading lower on today, as investors stayed cautious awaiting the outcome of several central bank meetings later on Wednesday.

Japan's benchmark index, Nikkei 225 declined 61.34 points or 0.31 percent to trade at 19,548.16. China's benchmark index, Shanghai Composite lost 4.85 points or 0.15 percent to trade at 3,234.47. Hong Kong's Hang Seng lost 113.83 points or 0.48 percent to trade at 23,714.12.

Singapore's Straits Times lost 13.48 points or 0.43 percent to trade at 3,129.92. South Korea's KOSPI declined 4.08 points or 0.19 percent to trade at 2,129.70. Taiwan's TAIEX fell 9.87 points or 0.1 percent to trade at 9,734.34.