In recent years,important progress has been made in the application of ghost imaging to long distance imaging,especially remote imaging.In this pape r,in order to promote the application of ghost imaging with sunlight,we study computational ghost imaging with incoherent light from blackbody radiation.Firs tly,according to the intensity probability density function for blackbody radia tion,we obtain the expression for the contrast-to-noise ratio RCN describing the im age quality of computational ghost imaging.Then the random speckle patterns mim ic blackbody radiation are generated through the computer program based on slice sample theorem.Finally,we employ digital light projector to generate random m odulated light,and then we experimentally realize computational ghost imaging o f reflective object using this modulated light.The ghost images of reflective o bject are reconstructed under the condition that several different measurement f rames and the corresponding RCN of the images is measured.The results,on one h and,show that the image quality is the best when the average value of random sp eckle intensity (gray) is about 160,and on the other hand,it shows that as the number of measurement frames increases from 2000to 4000,6000,8000,2000,a nd 20000, the RCN of the image increases from 0.8795to 1.241,1.516,1.755,2.100,and 2.371.The experimental results are in consistent with the theoretical analysis.This result is helpful to promote the application of ghost imaging with sun light (which can be considered as blackbody radiation) in long distance imaging etc.