The utility model discloses a self -recording type of declining evaporates and oozes appearance should evaporate and ooze the appearance and include: weigh cup and outside retainer cup, the retainer cup is put into to the cup of weighing, and the round hole is left at retainer cup bottom center, passes in the pressure conduction pole follow round hole, it is connected with pressure conduction pole and weighing sensor to weigh bottom of cup portion, weighing sensor inserts RTU signal control module, settle pressure conduction pole, weighing sensor and RTU module integration in protecting sheathing, protecting sheathing upper portion links to each other with outside retainer cup is fixed, and the airtight kneck of all non -s of protecting sheathing carries out waterproof sealing with the cushion, install the hot plate between interior module and protecting sheathing, fill foam insulation material between protecting sheathing and hot plate, this is miniature to evaporate and oozes the appearance and adopt solar energy power supply system to supply power, utilizes solar cell panel and battery, continuously provides 12V DC power supply for the measurement and the heating of instrument. The utility model is suitable for a water quantity variation monitoring of north low temperature, arid area soil, measurement accuracy is high.