The characteristic and law of interaction of multi-spatial solitons (more than two) in strongly nonlocal nonlinear media is discussed. Based on Snyder-Mitchell's linear model, the solution is achieved by the method of linear superposition. In addition solitons have been treated as particles. The interaction of three and four beams with spatial slanting symmetrical incidence is studied , and the rule of the interaction of multi-spatial solitons is obtained. The exact analytical solution of (2+1) solitons interaction has been achieved. From the solution the light intensity contour lines in solitons propagation are drawn. Multi-spatial solitons can form stable bound states when they propagate. Their spiraling is decided by the initial directions of incidence. There is no energy transfer in the process of propagation. The interaction has nothing to do with the beam's initial phases. When the solitons are treated as particles, the same rule of their interaction is obtained.