Land is an important natural resource for human’s living and developing. Residential land demand forecast is the core content of urban land use planning. To improve the forecast accuracy, we fully considered the influencing factors and had chosen urban population, GDP, fixed asset investment, and real estate sales as the main influencing indicators. Here we use the Ridge Regression Method to determine the linear relationship between the variables, and supplemented by multiple linear regression. We chose Tianjin as the target city to calculate the residential land demand. The results show that the method is simple, easy, and suitable for urban residential land demand prediction.