The dissolution rate of degradable pepper balls in different fracturing fluids is different, and the temperature of fracturing fluid also has a great influence on the dissolution rate of soluble fracturing pepper balls. The higher the temperature, the faster the dissolution rate of soluble fracturing pepper balls.The normal downhole temperature is between 100 and 150 degrees. The fracturing pepper ball and fracturing fluid enter the downhole at the same time, and the temperature of fracturing fluid is not high, the initial temperature is below 50 degrees. After several hours of fracturing operation, the temperature is below 90 degrees. At this time, the plastic soluble fracturing pepper ball will not dissolve, and the dissolution temperature of plastic pepper ball is above 100 degrees, and it takes dozens of hours. Therefore, the dissolution time of plastic soluble fracturing ball will be shorter than that of metal soluble fracturing ball, but the specifications of plastic soluble pepper ball can only be below 20mm in diameter, and it is difficult to realize plastic pepper ball over 20mm in technology, so plastic soluble pepper ball and metal soluble fracturing ball have strong complementarity in specifications.