A method for detecting the presence of hydrates into a pipe intended to carry hydrocarbon fluid, wherein a heating device for the carried fluid, formed by heating means laid out along the pipe and a temperature measurement device associated to the pipe, adapted to provide at regular intervals temperature values measured along the pipe is provided, and wherein the presence of at least one hydrate clogging into the pipe is detected from the exploitation of said measured temperature values, characterized in that: the temperature values of the carried fluid, distributed along the pipe, are estimated from said measured temperature values, a substantially continuous time monitoring of the change of the carried fluid temperature along the pipe is carried out, wherein: the direction of a global time change (30, 40) of the carried fluid temperature is evaluated, on at least a portion of the pipe, from the values of fluid temperature distributed along said portion, at least one area of said pipe portion for which a local time change (39, 49) of the carried fluid temperature shows a slope break in the direction opposed to the direction of the global time change (30, 40) of the temperature carried fluid for said portion, is identified and/or at least one area of said portion of pipe for which a local time change (39, 49) of the carried fluid temperature shows a slope of an absolute value that is at least three times lower than the absolute value of the slope of the global time change (30, 40) of the carried fluid temperature for said portion is identified, and an alarm signal of the presence of a hydrate clogging is elaborated for each identified area. the temperature values of the carried fluid, distributed along the pipe, are estimated from said measured temperature values, a substantially continuous time monitoring of the change of the carried fluid temperature along the pipe is carried out, wherein: the direction of a global time change (30, 40) of the carried fluid temperature is evaluated, on at least a portion of the pipe, from the values of fluid temperature distributed along said portion, at least one area of said pipe portion for which a local time change (39, 49) of the carried fluid temperature shows a slope break in the direction opposed to the direction of the global time change (30, 40) of the temperature carried fluid for said portion, is identified and/or at least one area of said portion of pipe for which a local time change (39, 49) of the carried fluid temperature shows a slope of an absolute value that is at least three times lower than the absolute value of the slope of the global time change (30, 40) of the carried fluid temperature for said portion is identified, and an alarm signal of the presence of a hydrate clogging is elaborated for each identified area. the direction of a global time change (30, 40) of the carried fluid temperature is evaluated, on at least a portion of the pipe, from the values of fluid temperature distributed along said portion, at least one area of said pipe portion for which a local time change (39, 49) of the carried fluid temperature shows a slope break in the direction opposed to the direction of the global time change (30, 40) of the temperature carried fluid for said portion, is identified and/or at least one area of said portion of pipe for which a local time change (39, 49) of the carried fluid temperature shows a slope of an absolute value that is at least three times lower than the absolute value of the slope of the global time change (30, 40) of the carried fluid temperature for said portion is identified, and an alarm signal of the presence of a hydrate clogging is elaborated for each identified area.