During this time, the Small and Medium Enterprises (SMEs) of soy milk, its milk filling in the packaging is done manually, so the results do not practical, not hygienic, as well as less accurate. Therefore, it is necessary to do research to develop automatic filling machine of soy milk to improve the SME productivity. In this research, the steps carried out are: survey and analysis of the SMES needs, the solution analysis of the problem, how to manufacture the milk chargers, and system testing. From the results of the design, soy milk filler has been made from stainless steel which is equipped with sensors and automatic discharge solenoid valve for which it is appropriate according to the ability of SMEs to the artisans in craftsmen able to operate, maintain and repair the equipment. From the test results, it can be shown that soy milk automatic filling machine has been running well and can help craftsmen SMEs in increasing their productivity. Keywords: soy milk automatic filling machine, SMEs, productivity, hygienic, accurate