1. A method for verifying quality of server, used for verifying a plurality of servers constructed in a server cluster, and the method for verifying quality of server comprising: installing a cloud computing platform in the servers in the server cluster, wherein the cloud computing platform comprises a cloud computing platform file system and a mapreduce frame; creating an input file folder on the cloud computing platform file system and storing a calculation data into the input file folder; creating a plurality of mapreduce tasks corresponding to a calculation job by the servers, accessing the calculation data in the input file folder, and distributively executing the mapreduce tasks by using the mapreduce frame to obtain a plurality of calculation results; storing the calculation results; and analyzing the calculation results to verify a quality of each of the servers.