There are many methods to evaluate economic benefit, single index can only reflex macro-economic status from one side or one angle, however, according to different production steps, sometimes, different conclusions can be drawn by using the indexes from different angles to evaluate the economic benefit of an enterprise. General comprehensive evaluation method and multivariate statistics method are the two comprehensive evaluation methods with strong practicability but have its own limitation, as a result, the advantages and disadvantages of each method should be measured when they are used so as to overall make objective evaluation on macro-economic benefit.