The study was conducted to observe the income smoothing on the manufacturing company listed on the Indonesian Stock Exchange. Income smoothing is capable to mislead investors in analyzing financial statements and mislead creditors in long-term loan decision making. The research object is manufacturing industry group, basic industry and chemical sector, cement sub-sector listed on BEI since 2005 -2017. The research result exhibits that factors influencing the partial earnings are par value stock, debt to equity ratio, earnings per share and price earnings ratio. On the other hand, return on asset and firm size is not significant. All variables studied influences income smoothing. KEY WORDSStock price, debt to equity ratio, return on asset, earning per share, price earning ratio, firm size, income smoothing.