A method of assessing crack resistance of double-doped concrete is disclosed. The method includes a step of firstly selecting reference factors influencing cracking resistance of the double-doped concrete; a step of building a plurality of models according to different selected reference factors to perform concrete crack resistance tests respectively; a step of measuring the cracking time of cracks, lengths of the cracks and widths of the cracks in each testing process and calculating the total area of the cracks; and a step of calculating crack resistance of each model according to the measured cracking time, lengths, widths and total area of the cracks. Crack appearance indexes such as the lengths of the cracks, the widths of the cracks and the total area of the cracks in a concrete testing process are comprehensively taken into account, the cracking time that is a time factor is also taken into account, assessing criteria are comprehensively selected, crack resistance of the concrete is obtained through comprehensive examination, and an assessing result can reflect crack resistance of the concrete more comprehensively.