Abstract: A simple and low cost icing wind tunnel experiment system has been designed in or-der to study the characteristics of wind turbine blade icing and de-icing methods.The convention-al open j et wind tunnel has been transformed by using the natural low temperature condition of the northern winter,and a water spray system and the icing test section were installed to provide the icing conditions.The verification experiments were carried out in winter,and the three main parameters:the temperature stability,the liquid water content and the medium volume droplet diameter were tested and calibrated.The results show that the main indexes can meet the re-quirements of the wind turbine icing test to a certain degree at the relatively stable environment temperature.