[Problem] To provide a laser therapy apparatus, a laser therapy system and an assessment method capable of assessing the state of laser catheter contact including how far the tip is embedded in the tissue. [Solution] The invention has: a connecting part (210) to which the second end of a laser catheter (300) connects, the laser catheter having a first end and a second end, emitting and admitting laser light from the apical surface of the first end, and having electrodes that are provided along the axial direction of the first end on the outer circumference of the first end an emission unit (110) that emits laser light to the second end that is connected to the connecting part an optical state-detecting unit (130) that admits returning light from the second end that is connected to the connecting part and detects the optical state of the admitted returning light an electrical state-detecting unit (135) that detects the electrical state of the electrodes via the second end that is connected to the connecting part and an assessing unit (150) that assesses, on the basis of the detected optical state and electrical state, the state of contact with the tissue to be treated using the first end and the laser catheter.Linvention a pour but de proposer un appareil de thérapie laser, un système de thérapie laser et un procédé dévaluation apte à évaluer létat dun contact de cathéter laser, comprenant la distance à laquelle la pointe est incorporée dans le tissu. A cet effet, linvention a : une partie de liaison (210) à laquelle la seconde extrémité dun cathéter laser (300) est reliée, le cathéter laser ayant une première extrémité et une seconde extrémité, émettant et laissant entrer de la lumière laser provenant de la surface apicale de la première extrémité, et ayant des électrodes qui sont disposées le long de la direction axiale de la première extrémité sur la circonférence externe de la première extrémité une unité démission (110) qui émet de la lumière laser vers la seco
