The utility model belongs to the technical field of coal bed gas row adopts well field data and detects, in order quick, safe, accurate test row to adopt the well producing fluid level degree of depth, the utility model provides a well testing arrangement is patrolled to portable coal bed gas, include by the lower supreme quick -operation joint who connects gradually, receiving arrangement and trigger device, receiving arrangement include pressure sound wave reception cavity and sound wave receipt microphone, the sound wave is received on the microphone is fixed in pressure sound wave reception cavity's inside wall through the wiring port, still is connected with the manometer on pressure sound wave reception cavity's the lateral wall. When utilizing under the the device testing well liquid level degree of depth, only needing to be connected quick -operation joint on the device and the coal seam gas well sleeve pipe plug, need not dismantling the mounting sleeve plug, do not need switch well head valve, do not need to do any change to the oil well, it is low to synthesize use cost, and factor of safety is high, has improved on -the -spot test operating efficiency, while furthest's reduction the damage of showing the well head pressure.