The invention belongs to the field of corrugated paper production, and particularly relates to an adjustable indenting machine for corrugated paper production. The adjustable indenting machine is convenient and quick in adjusting of indenting distance, convenient for replacement and capable of drying to-be-processed paper. The adjustable indenting machine comprises a first mounting plate, a firstsupporting rod, a second mounting plate, a first placement plate, a second placement plate, a drying device, a mounting frame, a mounting rod, a first fixing plate, a first elastic member, a first slider, a first sliding rail, a second slider and an electric reel, a second sliding rail is fixedly connected at the top of the first mounting plate, and the second slider is slidably connected with thesecond sliding rail. By the adjustable indenting machine, a wet paper raw material can be dried to a certain degree, and a distance between a first indenting barrel and a second indenting barrel canbe adjusted conveniently and quickly, so that effect of accelerating indenting speed is realized.