The invention discloses a temperature control and crack prevention design calculating method used for lining concrete of a door-opening-shaped section structure. The method comprises the following steps of (1) determining a temperature control and crack prevention target, (2) calculating the permitted maximum temperature and (3) making a temperature control scheme, specifically, the maximum temperature inside the concrete is calculated, and on the premise that the worked-out maximum temperature is smaller than or equal to the permitted maximum temperature, the temperature control and crack prevention scheme is designed. The calculation formula of the method is simple, the influences of surrounding rock performance, the lining structure size, concrete strength, intro-opening air temperature, water-introducing cooling and water temperature thereof, pouring temperature and the like can be reasonably reflected, the permitted maximum temperature of pouring construction each month in the construction period of the lining concrete of the door-opening-shaped section structure can be rapidly calculated, the maximum temperature inside the lining concrete is calculated rapidly for different temperature control schemes, and a temperature control and crack prevention construction scheme suitable for a project is provided under the conditions that the inside maximum temperature is smaller than or equal to the permitted maximum temperature and economy is achieved. The error is smaller than 3% compared with the simulation calculation result of a finite element method, and the temperature control and crack prevention design calculating method is particularly suitable for optimization and adjustment of primary design and an on-site construction scheme.