w1 w2 and w3 and storing another parameter a and comparing a preset number of reference rpms selected from the reference rpm reached number of times the parameter a and the preset reference number of times for example 70 40 and 16 to detect the cloth amount the operation and advantages of the method for detecting a cloth amount of the present invention will be explained the computing controller unit 1 provides 34 1 34 as an initial value for the number of times of cloth amount detecting attempts during conducting the laundry disentangling step after elapse of a preset time period for example 8 seconds and measures a drum rpm sensed through the speed sensing unit 4 for a preset time period after elapse of a preset time period again from a time when the rpm reaches to a preset rpm for example 50 rpm during which a reference rpm reached number of times which is a number of times the drum rpm reaches to a preset reference rpm for example 57 rpm is calculated and stored in a parameter 34 peak 110 34 s211 u02dc s215 the computing controller unit 1 then determines a number of times of cloth amount detecting attempts as an initial value is 34 1 34 at first the reference rpm reached number of times stored in 34 peak 110 34 is stored in a parameter w1 s216 and s217.