This paper highlights the crucial role of land allocation mechanisms in promoting industrial agglomeration by examining China’s 2007 industrial land market reform. By introducing transparency into the land-selling process, the reform facilitated more buyers to compete for land (reflected by increased land sale prices), enabling local governments to allocate land to the most suitable users. Combining comprehensive data sets that include information on initial local industrial structure, new industrial establishments, and industrial land transactions, the empirical analysis finds that the reform significantly increased the entry of firms from industries aligned with local specialization, particularly in areas that implemented the reform more strictly. A back-of-the-envelope calculation indicates a 1.3% increase in the national average total factor productivity of new entrants over three years post-reform due to a better match between new entrants and local industry specialization. Supporting evidence demonstrates the reform’s positive effect on economic growth (reflected in changes in nighttime lights), potentially through increasing local firms’ TFP.