The invention relates to a sample fixing device. The sample fixing device comprises a sample base, and further comprises a first sample fixing baffle and a second sample fixing baffle, wherein the first sample fixing baffle and the second sample fixing baffle are connected to the sample base; the first sample fixing baffle and the second sample fixing baffle are arranged at an angle with the sample base; and a sample is placed in the space defined by the first sample fixing baffle, the second sample fixing baffle and the sample base. The invention further relates to a table type cutting machine comprising the sample fixing device. According to the sample fixing device provided by the invention, a mechanical mode is used for replacing a manual mode for fixing a geological sample, so that the operation is simple and convenient; meanwhile, according to the table type cutting machine comprising the sample fixing device, a rock sample and a rotary saw blade can be in an independent closed space during cutting operation, and the rock sample and the rotary saw blade can be completely isolated from an operator, so that the use risk of the operator is greatly diminished, the use difficultyis reduced, the operation is convenient, and the cutting precision is also improved.