This paper uses a panel of 224,604 Chinese firms over the period 2004–2009 linked with a set of unique city-level financial development data to examine how financial development affects the way corporate inventory investment is financed. We find that financial development enhances the use of interest-bearing loans and discourages the use of trade credit in financing inventory investment. These effects are more pronounced after the 2007 property rights reform, as well as for privately-owned firms, small firms, firms with no political connections, and firms located in coastal regions. Our results are robust to using a variety of different specifications, as well as different measures of financial development and estimation methods.