The invention discloses a super high-rise building construction accident risk source evaluation method and device, and the method comprises the steps: carrying out the calculation through combining with a fuzzy theory, obtaining the probability of risk load generation of each type of risk source at an industry average level, and obtaining the average probability of risk load generation of each type of risk source through random expression calculation; determining influence weights of different risk resistances on the risk load; correcting the average probability of risk load occurrence of eachtype of risk sources according to the risk resistance level and the influence weight of the to-be-evaluated project; and calculating and obtaining a risk source evaluation result of the to-be-evaluated project according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source. On one hand, the method improves the construction safety management level, thereby reducing the accident rate and saving the cost and construction period; and on the other hand, social problems caused by safety accidents can be reduced, the application prospect is good, and high social benefits and economic benefits are brought.