Massive Multiple-Input Multiple-Output (MIMO), with giant array size and multi-dimensional array structure, has been widely considered as a key physical layer technique in future wireless communications. With regarding the large number of antenna elements, some new challenges and issues are arising. To solve these problems, a statistical channel model based on the spherical wave-front theory is proposed. Furthermore, the map-based ray-tracing algorithm with low complexity is used to compute the parameters of the proposed channel modeling. Finally, several statistical characteristics, such as delay spread and spatial distance, are given. The analysis results show that the proposed channel model is able to describe the main characteristics of massive MIMO channel.